wind wheel generator Objective: The objective of this project is to design and build a wheel that rotates with air and can generate electricity. Components: Project involves the following components: Plastic spoons Ice-cream sticks DC motor LED's Candle Cold drink can Electrical wires Glue gun or adhesive tape Platform Procedure: Step 1: Take the bottle cap and attach the spoons in a circular manner to it using glue gun as shown in the diagram. Step 2: Attach the bottle cap to the shaft of the DC motor Step3: Connect both the terminals of the DC motor to the system of LED Step 4: Fix the motor on the stand and place the stand on the tray. Step 5: Place the stand in the platform. Step 6:Take the can and fix it at some height to the platform so that the opening of the can faces the wheel. Step 7: Place a burning candle below the can. Result: When the candle heats the can the air inside the can is warmed u and expand ,allows it to flow outside and rotate the wheel on its way. As the wheel starts rotating DC motor converts the mechanical energy of rotating wheel into electrical energy and light up the system of LED's. balloon powered car Objective: The objective of this project is to design and build a 4 wheeled car which is operated by air filled balloon. Components: Project involves the following components: Cardboard Straw Wheels Balloons Glue gun or adhesive tape Procedure: Step 1: Take the cardboard sheet and design it in the form of car. Take two car designs and attach to both side of the cardboard . Step 2: Attach the wheels to the bottom of your car using the axles. Make sure the axles are securely attached and allow the wheels to rotate freely. Step3: Create an opening at the rear of your car to attach the balloon. This opening should be slightly smaller than the inflated balloon. Step 4: Attach a straw to the opening you made in step 3. This will act as a nozzle for the air to escape from the balloon. Step 5:Inflate the balloon but do not tie it off yet. Stretch the open end of the balloon over the straw or dowel, ensuring a tight seal. Use tape to secure the balloon to the car body if necessary. Step 6: Place your car on a smooth surface or a track. Ensure the wheels are in contact with the ground. Result: On releasing the air from the balloon by pinching the balloon's opening or removing the tape. As the air escapes from the balloon, the car will move forward. water wheel generator Objective: The objective of this project is to design and build a waterwheel that can generate electricity. Components: Project involves the following components: Plastic spoons Ice-cream sticks DC motor LED's Bottle caps Straws Electrical wires Glue gun or adhesive tape Bottles Tray Procedure: Step 1: Take the bottle cap and attach the spoons in a circular manner to it using glue gun as shown in the diagram. Step 2: Attach the bottle cap to the shaft of the DC motor Step3: Connect both the terminals of the DC motor to the system of LED Step 4: Fix the motor on the stand and place the stand on the tray. Step 5: Place the stand in the tray and fill it with water. Step 6: Make a small hole at the bottom and neck of the bottle. Step 7: Place the small straw at the lower opening and bigger bended straw at the upper opening . Step 8: Fill the tray and bottle with water and position the bottle at some height so that the water falls directly at the spoons which will make the wheel rotate. Result: When the water falls at the wheel it starts rotating . DC motor converts the mechanical energy of rotating fan into electrical energy and light up the system of LED's. BRISTLEBOT Objective: To design and build a Bristlebots. These are simple robots made from a toothbrush head or any other bristle-based structure that uses vibrations to move around. Components: Project involves the following components: Toothbrush head Coin cell battery Vibrating motor Decorative materials Procedure: Step 1: Prepare the toothbrush head by remove the bristle portion from the handle. Step 2: Attach the vibrating motor to the top or bottom side of the toothbrush head. Make sure the motor is centered and firmly attached. Step 3: Attach the positive (usually red) wire of the vibrating motor to the +ve terminal of the coin cell battery. Likewise, connect the negative (usually black) wire of the motor to the negative terminal of the battery. Step 4: Attach the battery to the toothbrush head using double-sided tape . Step 5: Decorate your bristlebot to give it a unique look. Use markers, googly eyes, or any other materials you prefer to add personality to your creation. Result: When bristlebot starts the vibrating motor starts making vibration and the brush starts moving. Robotic Bug Objective: The objective of the solar powered robot project is to design and build a small autonomous vehicle that can work using solar energy. Components: Project involves the following components: Large paperclip or binder clip Wooden clip Small electric motor (vibrating motor) Coin cell battery LED's Electrical wires Glue or adhesive tape Optional: Decorative materials (e.g., googly eyes) Procedure: Step 1: Straighten the paper clip and bend one end to create a hook-like shape. This will serve as the bug's legs. Step 2: Attach the small electric motor to the wooden clip using glue or adhesive tape. Position it in a way that the motor's vibrations can be transmitted to the bug's body. Step3: Attach the LED's to the wooden clip using glue on both sides of the clip as shown in diag. Step 3: Attach the paper clip legs to the wooden clip using glue or by creating small holes to insert the ends of the paper clip Step 4: Connect one end of the electrical wires to the positive and negative terminals of the coin cell battery. The other end of the wires will connect to the motor. Attach the wires to the motor terminals, ensuring proper polarity.Place the coin cell battery on the wooden block, ensuring it is securely held in place. moving bot Objective: The objective of this project is to design and build a small bot that can work on a battery and a DC motor. Components: Project involves the following components: 9V battery Ice-cream sticks DC motor cork Electrical wires Glue or adhesive tape Optional: Decorative materials (e.g., googly eyes) Procedure: Step 1: Use ice-cream sticks to make hand and legs of the bot and attach it to the battery. Step 2: Paste the DC motor through adhesive tape at the top of the battery making the face of the bot through it. Step3: Insert the cork in the DC motor . Step 4: Connect the terminals of the battery to the DC motor. popsicle fan Objective: The objective of this project is to design and build a popsicle fan that works without any power source. Components: Project involves the following components: Popsicle sticks BBQ stick Plastic bottle String Glue gun or adhesive tape Cutter Procedure: Step 1: Make the hole at cenre if popsicle sticks and place them at 90 degrees to each other joining the centres. Design your sticks as you like and insert then in a BBQ stick making a shape of a cross. Step 2: Poke a hole in the bottle cap at the centre. Step3: Make a hole at the side and bottom of the bottle Step 4: Insert the string through the hole on the side of the bottle. Step 5: Insert the stick through the bottle cap and tie the string around the stick. Step 6:Insert the stick inside the bottle passing through the hole at the bottom. Result: When the sring is pulled out the fan rotates. solar powered robots Objective: The objective of the solar powered robot project is to design and build a small autonomous vehicle that can work using solar energy. Components: Project involves the following components: DC motor solar cell Chassis wheels wires Adhesive(DST) Procedure: Step 1: Place the DC motor on the chassis and position accordingly . Use adhesive (DST) to secure the motor in that place. Geared dc motors Wheels Step 2: Connect the wheels to the shaft of the DC Motor. Step 3: Join the terminals of both the DC Motors to the terminals of the breadboard using jumper wires. Step 4: Attach the breadboard and solar cell to the chassis using adhesive. Connect the black wire to the negative of the breadboard and red wire to the positive of the breadboard. 2wd ROBO CAR Objective: To design and build a 2WD car-like robot that can be powered by geared motors. Components: Project involves the following components: CHASSIS JUMPER WIRES GEARED DC MOTOR 9V or 12 V POWER SUPPLY BREADBOARD WHEELS Working principle: Connect the motor and gears to a chassis or frame, attach the wheels to the gears, and power the motor using a battery. When you switch on the motor, it will rotate the gears and set the wheels in motion, propelling the car forward. Procedure: Step 1: Place the geared DC motor on the chassis and position accordingly . Use adhesive (DST) to secure the motor in that place. Step 2: Connect the wheels to the shaft of the geared DC Motor. Geared dc motors Wheels Step 3: Join the terminals of both the DC Motors to the terminals of the breadboard using jumper wires. Step 4: Attach the breadboard and battery to the chassis using adhesive. Connect the black wire to the negative of the breadboard and red wire to the positive of the breadboard. MAGNETIC MAZE Objective: The objective of creating a magnetic maze project is an interactive and hands-on activity that introduces students to the concepts of magnets and magnetism while incorporating the fun of solving mazes. Components: Project involves the following components: Small magnet Cardboard or sturdy paper Markers, crayons, or colored pencils Scissors Magnetic tape Glue or tape Small magnetic objects Procedure: Step 1: Design the maze on sturdy paper using markers, crayons. Be creative with maze design, incorporating twists, turns, dead-ends, and a clear starting and ending point. Step 2: Once the maze design is complete, carefully cut out the maze along the lines you have drawn. Step 3: Cut small pieces of magnetic strips or magnetic tape and attach them to the back of the maze. These strips will serve as the magnetic surface for the small magnetic objects to stick to. Make sure the magnetic strips are securely attached to the maze. Step 4: Place small magnetic objects such as paperclips or metal washers at various points within their maze. These objects will serve as obstacles or challenges Step 4: Hold the magnet close to the maze, near the magnetic strips, and move it under the maze. Result: The magnetic force will attract the metal objects through the cardstock, allowing the students to maneuver the objects through the maze. wobble bot Objective: The objective of this project is to design and build a small bot that can work on a battery and a DC motor. Components: Project involves the following components: DC motor Plastic cup or disposable cup Unused CD Wires Switch Battery 9V Procedure: Step 1: Turn the plastic cup upside down, this will serve as the body of the wobblebot. Make two holes at the bottom of the cup. Step 2: Connect one of the terminal of switch to a battery and the other to the dc motor. Now attach the switch to the cup through that hole. Step 3: Attach the DC motor at the centre of the CD and fix a cork at the tip of the motor. Connect the other terminal of battery to the DC motor. Step 4: Fix the CD and bot body together and attach the battery at the top of the bot. Step 5: Decorate the body of the bot with wobbly eyes and other creative arts. Result: The wobblebot will start moving as the switch will turn on. propelling car Objective: The objective of the propelling car robot project is to design and build a small autonomous vehicle that propels using wind energy. Components: Project involves the following components: Cardboard Straw Wheels DC motor Fan Glue gun or adhesive tape Procedure: Step 1: Take the cardboard sheet and design it in the form of car. Take two car designs and attach to both side of the cardboard . Step 2: Attach the wheels to the bottom of your car using the axles. Make sure the axles are securely attached and allow the wheels to rotate freely. Step 3: Attach the DC motor to the car body and insert a fan to it. Step 4: Connect the terminals of a 9V battery to DC motor Result: When battery connected to the DC battery fan starts rotating and propels the car forward. simple led circuit Objective: The objective of the project 'simple LED circuit' is to design the circuit using battery ,LED and switch on a breadboard. Components: Project involves the following components: Breadboard LED Switch Jumper wires Battery 9V Procedure: Step 1:Insert the LED on breadboard Step 2: Connect one terminal of LED through jumper wires to the battery. Step 3: Connect other terminal of LED through jumper wires to the switch. Step 4: Connect the other terminal of a 9V battery to switch. Result: When battery is connected to the circuit i.e. switch is switched on current started flowing in the circuit and LED is tuened on. robotic hand Objective: The objective of creating and designing a robotic hand project is an interactive and hands-on activity that can demonstrate the basic gripping and hand movements of robot. Components: Project involves the following components: Cardboard (thick and thin) Craft knife or scissors Markers or paints Straws or wooden dowels String or elastic bands Hot glue or craft glue Hole puncher or a sharp object to make holes Procedure: Step 1: Start by designing the shape of the hand on a piece of thick cardboard. Trace your own hand or use a template. Cut out the hand shape carefully using a craft knife or scissors. Step 2: Cut out rectangular strips of cardboard for each finger. The length should be approximately the same as the corresponding finger on the hand template. Make small cuts on one side of the cardboard strips to create joint-like sections. These cuts will allow the fingers to bend. Attach the strips to the hand template using hot glue or craft glue. Ensure they are aligned with the finger positions. Step 3: Take straws or wooden dowels and cut them into small pieces to act as finger bones. Insert the straws or dowels into the joint cuts on the finger strips. Glue them in place securely. Step 4: Create a wristband or a base for the hand using thick cardboard. This will act as the anchor for the finger movement. Punch holes at the base of each finger strip and thread string or elastic bands through them. Attach the strings or elastic bands to the wristband or base using glue or by tying them securely. Step 5: . Use markers or paints to add colors and details to your cardboard robotic hand. Test the movement of the fingers by pulling or releasing the strings/elastic bands. Adjust the string tension as needed to achieve desired finger movement. solar oven Objective: The objective of creating a solar oven project is an interactive and hands-on activity that introduces students to the concepts of solar energy and its applications. Components: Project involves the following components: Cardboard box (shoebox size or larger) Aluminum foil Clear plastic wrap or a sheet of glass Black construction paper Insulation material (such as newspaper ) Scissors Tape Procedure: Step 1: Take a cardboard box and cut off the top flaps. Line the inner sides of the box with aluminum foil. Use tape to secure it in place. This will help reflect sunlight into the oven. Cover the opening of the box with clear plastic wrap or a sheet of glass. Ensure it is tightly secured to create a transparent window. Step 2: Cut a piece of black construction paper to fit the bottom of the box. This will help absorb the sunlight and convert it into heat. Place the black construction paper at the bottom of the box. Add insulation material such as crumpled newspaper or styrofoam around the sides of the box. This will help retain heat inside the oven. Step 3: . Place the solar oven in direct sunlight, preferably on a sunny day. Wait for some time to allow the oven to heat up. Step 4: Once the solar oven has heated up, you can demonstrate cooking by placing a small cooking pot or pan inside. Add food items like s'mores, marshmallows, or chocolate in the pot/pan. Close the oven by covering it with the plastic wrap or glass. Result: Solar energy converted heat energy and cooks the food placed in the oven. hot air balloons Objective: The objective of the hot air balloon project is to design and build a small hot air balloon using lightweight papers. Components: Project involves the following components: Tissue paper or lightweight fabric (colored or plain) Drinking straw or wooden dowel String or thread Craft glue or tape Scissors Marker pens or crayons Hairdryer (for demonstration purposes only) Optional: Stickers, ribbons, or other decorative materials Procedure: Step 1:Cut a square or rectangular piece of tissue paper or lightweight fabric. Start with a size of around 30 cm x 30 cm (12 in x 12 in) or adjust as needed. Decorate the tissue paper or fabric using marker pens or crayons. Express your creativity by drawing patterns or designs on the material. Fold the tissue paper or fabric in half to form a triangle. Make sure the decorated side is on the outside. Glue or tape the two open sides of the triangle together to create an envelope shape. Leave the top of the triangle open. Step 2: Cut a small circle or square piece of tissue paper or lightweight fabric. This will serve as the basket. Attach the basket to the bottom of the envelope using glue or tape. Ensure it is securely attached. Step 3: Cut a drinking straw or wooden dowel to a length of around 20 cm . Attach one end of the straw or dowel to the top opening of the envelope using glue or tape. This will act as the framework to hold the balloon's shape. Step 4: Cut a length of string or thread, around 60 cm (24 in) long. Attach one end of the string or thread to the center of the straw or dowel. Make a small loop or knot at the other end of the string to serve as a handle. Result: Using a candle set on low heat, hold it near the opening of the balloon in the basket, gently inflating it with warm air. The balloon rises as the warm air fills it helicopter spinner Objective: The objective of the helicopter spinner project is to design and build a paper helicopter spinner that demonstrates the concept of aerodynamics and rotational motion. Components: Project involves the following components: Paper (printer paper or lightweight construction paper) Paperclips (small-sized) Scissors Markers or crayons (for decorating) Procedure: Step 1: Start with a square piece of paper. Decorate the paper with markers or crayons. With the decorated side facing down, fold the paper in half diagonally to form a triangle. fold the triangle in half again, making sure the open edges are aligned. Step 2: With the folded edges facing you, use scissors to make four evenly spaced cuts from the folded edge towards the open edge. Stop the cuts about 2/3 of the way down the paper. Ensure the cuts are parallel to each other and extend nearly to the center fold. Step 3: Carefully unfold the paper to reveal the four flaps formed by the cuts. b. Take one flap and fold it up along the central crease line, then repeat with the remaining three flaps. This will form the rotor blades. Step 4: Select a small paperclip and unbend it to create an "L" shape. Slip the straight end of the paperclip through the center hole of the folded paper, allowing the bent end to rest on top. The paperclip provides weight and stability to the spinner. Result: Hold the helicopter spinner between your thumb and index finger, just below the paperclip. Gently drop the spinner from a height, allowing it to spin and descend slowly. Observe how the rotating blades create lift and cause the spinner to glide to the ground. drums Objective: The objective of the drum project is to design and build a DIY drum using balloons to explore the basics of sound and rhythm while also promoting creativity. Components: Project involves the following components: Empty cylindrical container ( plastic container) Balloon Rubber bands or string Craft paper or colored construction paper Scissors Tape or glue Decorative materials (markers, stickers, glitter, etc.) Procedure: Step 1: Use markers, stickers, or other decorative materials to personalize the drum. unleash your creativity by drawing patterns, designs, or even your names on the container. Step 2: Cut the neck of a balloon to separate the rounded part from the open end. Stretch the rounded part of the balloon over the top of the container. Ensure it is taut and smooth across the opening. Step 3: Use rubber bands or string to secure the balloon tightly around the container. Wrap them around the container's rim multiple times to keep the drumhead in place. Step 4: Decorate the paper circle and attach it to the lid using tape or glue. Attach the lid to the bottom of the container using tape or glue. This serves as a resonating surface and helps enhance the sound of the drum. Result: Once the drum is assembled, experiment with different drumming techniques. You can use your hands, fingertips, or even make drumsticks from wooden dowels or chopsticks. Explore different rhythms and sounds by tapping on different areas of the drumhead. straw propeller plane Objective: The objective of the straw propeller plane project is to design and build a straw propeller plane that demonstrates the concept of aerodynamics and rotational motion. Components: Project involves the following components: Plastic straw Index card or lightweight paper Scissors Fan Tape or glue Optional: Decorative materials (markers, stickers, etc.) Procedure: Step 1: Start by cutting two rectangular strips from the paper. Each strip should be approximately 2-3 centimeters wide and 8-10 centimeters long. Be creative and decorate the strips of desired stickers, or any other decorative materials. Step 2: Take one of the strips and fold it in half lengthwise, making sure the decorated side is facing out. Starting from the folded edge, make diagonal cuts towards the open edge, creating a series of triangular shapes along the folded edge. Repeat this process with the second strip. Step 3: Insert the ends of the straw into the folded ends of both propeller blades. The folded ends should slide onto the straw, securing the blades in place. Make sure the blades are positioned at the same height on the straw, with the triangular shapes facing outward. Step 4: Use tape or glue to secure the folded ends of the propeller blades to the straw. This step ensures that the blades stay in place during rotation. Allow the tape or glue to dry completely before proceeding. Result: Hold the straw propeller between your hands and blow air over the blades. Observe how the blades rotate, creating a spinning motion. Encourage students to experiment with different blowing techniques to observe changes in rotation speed. kite making Objective: The objective of the kite making project is to design and build a kite that demonstrates the concept of aerodynamics ,wind and design. Components: Project involves the following components: Paper Dowels or lightweight wooden sticks (two long ,one short) String or kite line Scissors Tape or glue Decorative materials (markers, stickers, ribbons, etc.) Procedure: Step 1:Take the two long dowels or wooden sticks and form a cross shape, with one stick placed horizontally and the other vertically. The intersection should be about one-third of the way down from the top of the vertical stick. Secure the two sticks together using tape or by tying them with string. Ensure they are tightly connected. Attach the shorter dowel or stick diagonally across the longer sticks, forming a diamond shape. This will serve as the kite's spine. Secure the short stick to the longer sticks using tape or string. Step 2: Place the paper on the ground or a work surface. Place the frame on top of the paper ensuring that the frame is centered and aligned with the paper edges. Cut the paper, leaving a border of about 5 centimeters (2 inches) around the frame. Fold the paper edges over the frame and secure them with tape or glue. Make sure the paper is taut but not overly stretched. Step 3: Cut two equal lengths of string, approximately 60 centimeters (24 inches) long. Attach one end of each string to the top and bottom points where the shorter stick intersects with the longer sticks. These are known as the bridle points. Tie the loose ends of the string together, forming a loop. This loop will serve as the attachment point for the flying string. Result: Find an open space, preferably a field or beach, with a clear area and minimal obstacles such as trees or power lines. Attach a long string or kite line to the loop on the bridle. Hold the kite up and allow the wind to catch it. Gently release the string, allowing the kite to soar into the sky. parachute drops Objective: The objective of the parachute drop project is to design and build a parachute using waste materials. Components: Project involves the following components: Plastic heavy-duty trash bag Plastic sandwich bags String Scissors Hole punch Procedure: Step 1: Cut a square from the garbage bag that is 20 inches on each side. Use a hole punch to punch one hole in each corner of the piece of plastic garbage bag. Step 2: Cut four pieces of 20-inch long string. Thread a piece of string through each hole in the bag and secure by tying the string firmly on each corner. Step 3: Place one egg into the plastic sandwich bag, twist the top of the bag and tie closed with the loose ends of strings. This will also attach the parachute to the bag holding the object. Result: Take the parachute to the second floor of your house, attach some object or your cartoon character and drop it from the window. See if your cartoon is safely landed. Try with different size of bags and strings and examine the changes. water dispenser Objective: The objective of the water dispenser project is to design and build a water dispenser that demonstrates the concept of air pressure. Components: Project involves the following components: Plastic bottle Straws Cardboard box Scissor, paper knife Glue or adhesive Procedure: Step 1: Make a small hole or opening at the lower side of the bottle. Insert a bend straw into the opening and paste it using hot glue gun. Step 2: Secure the bottle at some height in the box and mark the opening the cardboard box as well. Pass the straw through this small opening. Step 3: Result: Place the container under the nozzle. When the cap of the bottle is loosened water start flowing through it, and when its tightened back water stops flowing. lemon battery Objective: The objective of the water lemon battery project is to design and build a battery that demonstrates the concept converting chemical energy in the lemon into electrical energy, to light a LED. Components: Project involves the following components: A lemon, or other citrus fruit 18 (or smaller) gauge copper wire Wire stripper/clipper A grown-up or older friend Steel paper clip, small galvanized nail Procedure: Step 1: Strip around two and a half inches of plastic off the wire and cut that section away from the roll of copper wire you have. Step 2: Take the paper clip and straighten it out. Using the clippers cut it to the same length as the wire of copper. Step 3: Rub off any of the rough spots that are on your conductors. The end of the wire must be smooth as you can connect the LED to it. Step 4: The lemon needs to be pressed so that its cell walls breakdown and the juice is released. For the chemical reaction to take place the sour juices of lemon should be properly released. Step 5: Take the copper wire and stick it for about an inch inside the lemon. Step 6: Take the two free ends and connect them to the LED. Result: when the lemon is pressed and connection is maintained LED will light up, showing the conversion of chemical energy to electrical energy. door bell alarm Objective: The objective of the door bell alarm project is to design and build a bell that rings when btton is pressed Components: Project involves the following components: Buzzer Battery Wires Pushbutton Procedure: Step 1: Connect one terminal of a battery to the buzzer . Step 2: Connect the other terminal of the battery to the push button. Step 3: Push button is connected to the buzzer as shown in the fig. Step 4: When the switch is pressed the buzzer will start working. Result: When switch is pressed circuit gets completed and buzzer starts . electric lift Objective: The objective of the electric lift project is to design and build a lift and understand its working. Components: Project involves the following components: DC geared motor String Battery Switch Wires Lift stand Screw Cardboard box Decorative items Procedure: Step 1: Set the lift stand on the platform and place the lift at the centre of the stand. Step 2: Connect one terminal of the motor to the battery and other to the switch. Step 3: Secure the connections between switch and the battery. Step 4: Stick the screw using hot glue gun at axle of the motor. Step 5: Take a small cardboard strip and insert two screws at some distance horizontally on it. Step 6: Stick that strip on the top of the frame ,pass the string from those screws and insert the other end of the string to the centre top of the lift. Step 7: Secure all the components on the platform properly using DST. Result: When switch is turned on the motor starts working and lift start moving up. When connections are reversed lift comes down. hydraulic lift Objective: The objective of the hydraulic lift project is to design and build a lift and understand how hydraulic pressure works. Components: Project involves the following components: Syringe -2 Pipe Cardboard box lungs model Objective: The objective of the lungs model project is to design and build a model and show how human lungs work. Components: Project involves the following components: Plastic bottle (1-liter or 2-liter size) Balloons (2) Rubber bands or string Drinking straws (2) Scissors Tape Craft materials (colored paper, markers, etc.) for decoration Procedure: Step 1: Remove the cap from the plastic bottle. Cut off the bottom of the bottle, leaving a cylinder shape. Step 2: Take one balloon and cut off its neck. Stretch the open end of the balloon over the bottom (cut end) of the bottle. Secure the balloon with a rubber band or tie it tightly with a string. Step 3: Cut two straws into equal lengths, approximately 5-7 cm each. Insert one straw into the neck of the second balloon, leaving a small portion sticking out. Seal the neck of the balloon around the straw with tape, ensuring it is airtight. Repeat the above steps with the second straw and balloon. Step 4: Attach the balloon with the straw to the bottle. Place the straw into the bottle's neck, with the balloon hanging freely inside. Use tape to secure the straw in place and ensure an airtight connection. Attach the second balloon with the straw to the bottle. Insert the other end of the straw into the bottle's opening. Use tape to secure the straw in place and ensure an airtight connection Step 5: Use colored paper, markers, or other craft materials to decorate the lung model. b. Add labels to identify the diaphragm, lungs, and other respiratory structures. Result: To demonstrate how the lung model works, gently squeeze the bottle from the sides. As you squeeze, the diaphragm (balloon) will move downward, simulating inhalation. This movement creates a vacuum, pulling air into the lungs (balloon with the straw). When you release the squeeze, the diaphragm moves back up, pushing air out of the lungs, simulating exhalation. hydraulic hand Objective: The objective of the hydraulics hand model project is to design and build a hand and show how the hydraulic pressure works. Components: Project involves the following components: Cardboard Drinking straws Syringes (with needles removed) Rubber bands Craft materials (markers, scissors, glue, etc.) Procedure: Step 1: Draw and cut out the shape of a hand from cardboard. You can use a template or trace your hand as a guide. Decorate the cardboard hand using craft materials, markers, or paint. Step 2: Cut small sections of drinking straws to represent the finger joints. Prepare enough sections for each finger of the cardboard hand. b. Attach the straw sections to the cardboard hand using glue or tape. Position them at the finger joints. Step 3: Cut two straws into equal lengths, approximately 5-7 cm each. Insert one straw into the neck of the second balloon, leaving a small portion sticking out. Seal the neck of the balloon around the straw with tape, ensuring it is airtight. Repeat the above steps with the second straw and balloon. Step 4: Attach the balloon with the straw to the bottle. Place the straw into the bottle's neck, with the balloon hanging freely inside. Use tape to secure the straw in place and ensure an airtight connection. Attach the second balloon with the straw to the bottle. Insert the other end of the straw into the bottle's opening. Use tape to secure the straw in place and ensure an airtight connection Step 5: Use colored paper, markers, or other craft materials to decorate the lung model. b. Add labels to identify the diaphragm, lungs, and other respiratory structures.