Elementary
Essential Lab
Levers on Me
Science Capacity Development & School Reform Accountability
Agenda
• Lab Norms
• Bellringer
• Sunshine State Standard
• Engage - BrainPOP
• Explain – Background Knowledge
• Explore - Lab
• Elaborate
• Evaluate
• Gizmo
Lab Norms
1. Be responsible.
2. Follow ALL instructions carefully.
3. Please avoid touching any equipment,
chemicals, or other materials in the laboratory
area until you are instructed to do so.
4. Avoid eating food, drinking beverages, or
chewing gum in the laboratory.
5. Dress properly during a laboratory activity:
safety goggles, lab coats, long hair tied back,
no sandals, no dangling jewelry.
Levers on Me Lab
Florida Sunshine State Standard Benchmark:
SC.H.3.2.1
The student understands that people, alone or in
groups, invent new tools to solve problems and do
work that affects aspects of life outside of science.
Additional Florida Sunshine State Standard Benchmarks:
SC.H.3.2.3: The student knows that before a group of people build something or try
something new, they should determine how it may affect other people.
Bellringer
Cities like West Palm Beach have water
purification programs to keep drinking
water free from bacteria and other
pollutants. How does this help people
living in cities?
A.
B.
C.
D.
It eliminates filters from factories.
It produces large amounts of water.
It helps people by cleaning the air they breathe.
It helps people by making the water safer to use.
ENGAGE
EXPLAIN: Background Knowledge
• SC.H.3.2.1 also assesses SC.H.3.2.3.
• Students need to understand simple tools
and how these tools help us.
• Benchmark is assessed as MC, SR (low,
moderate, high complexity).
• People in many jobs must use tools. Cooks
use pots and pans. Mechanics use
screwdrivers and wrenches.
• Scientists use tools to measure and observe
objects in nature.
Scientific Tools
• People in their everyday lives use tools. We
use tools at our jobs and we use tools, such
as pots and pans, to help us cook.
• Construction workers and mechanics use
screwdrivers and wrenches.
• Scientists use tools to measure and observe
objects in nature.
Scientific Tools
A tape measure helps
you measure the length
of curved or irregular
surfaces like your
head. It measures in
units called centimeters
(cm).
A spring scale can
measure weight or
friction. It measures in
units called newtons
(N).
A magnifying box
allows us to study small
objects such as
pebbles or bugs.
Pictures obtained from Harcourt Online
Scientific Tools
A microscope allows us
to see things too small
for the naked eye
(without glasses or
contacts).
A thermometer
measures the
temperature of liquids
and the air. It is
measured in degrees
Celsius or Fahrenheit.
Use a dropper to move
small amounts of liquid
or to measure the
volume of a liquid by
counting drops.
Scientific Tools
A balance is a tool
that measures the
amount of matter in
an object – it
measures its mass.
The unit for mass is
grams (g).
Forceps help you pick
up small objects. They
help you to hold up the
object when you are
looking through a hand
lens.
A hand lens allows you
to look at objects with
more detail. When you
place the object
beneath the lens, the
lens makes the object
look larger.
Pictures obtained from Harcourt Online
Additional Background Knowledge
• A simple machine is a tool that makes it easier for us
to do things.
• A lever is a simple machine. It makes it easier for us
to move things.
• Levers have two parts: the arm and the fulcrum.
• A rake is an example of a lever. This simple machine
reduces the force needed to lift or move an object.
Team Jobs
Team Jobs
Purpose:
To provide students with the
understanding of how simple tools can help
us do work.
Objective:
I can identify how simple tools, such as a
lever, can help us to solve problems and do
work.
Materials:
• 1 plastic ruler with metric measurements (cannot
be bendable)
• 1 paper ruler
• 1 small box
• 5 marbles or other small objects of equal size and
weight
• 1 rubber band
• tape
Hypothesis
• If you place the fulcrum close to the
object, then the object will
____________________________.
EXPLORE: Procedures
1. Place the pencil under the ruler (like a seesaw) at the 15 cm mark.
2. Tape the box (with marbles inside) on one end
of the ruler.
3. Put the five marbles inside the empty box.
4. Slip a rubber band around the other end of
the ruler.
5. Allow this end of the ruler to stick out
approximately 1 cm over the edge of the table.
EXPLORE: Procedures
6. Use the rubber band to lift the box. You will need
to pull the rubber band stretching it down so that
you lift the box with the marbles at the other end
of the ruler. Continue to lift until the rubber band
end of the ruler touches the table.
7. When the ruler touches the table, record the
height (in centimeters) that the box was lifted.
8. Change the position of the fulcrum two additional
times. Record the measurement and then repeat
step 6 for each changed position.
9. Record your results on the table.
Collecting Data
• Data is the information gathered during an
experiment. Sometimes data involves counting
or measurements such as length.
• Data that involves numbers or measurements
should be organized in a table. Once the data
has been collected from the experiment, it must
be analyzed, or a decision about what the data
means is drawn.
Levers on Me Data
Position of Fulcrum
Distance Box with
Marbles Was Lifted
1.
cm
2.
cm
3.
cm
Graphing
• Sometimes calculations need to be completed.
In addition, a graph may need to be compiled.
A graph helps people to understand the data
and gives viewers a picture of the data. A
conclusion about what was learned from the
experiment can then be drawn from the
analyzed data.
• Use the data collected and construct a bar
graph.
Conclusion
A conclusion is an explanation
based on evidence from
observations. It answers, “Does the
data support the hypothesis?”
Conclusion
1. Was your hypothesis correct? Why or why not?
2. Where did you have to position the fulcrum so
that the box was able to be lifted higher?
Explain.
3. What do think would happen if the box was
empty? Explain.
4. Why do you think this tool is important to our
everyday lives?
Elaborate
ExploreLearning
Gizmos: Levers
EVALUATE
Billy is packing his backpack to go on a
hiking trip. Which of the following tools would
come in handy the most while hiking through
the woods?
A.
B.
C.
D.
Hammer
Compass
Pencil
Saw
Science Capacity Development Team
Cristian Carranza, Science Manager
cristian.carranza@palmbeach.k12.fl.us
Shari Bremekamp
William Rizzo
bremekamp@palmbeach.k12.fl.us
rizzow@palmbeach.k12.fl.us
Crystal Clark
Adrian Seepersaud
clarkcr@palmbeach.k12.fl.us
seepersaud@palmbeach.k12.fl.us
Annmarie Dilbert
Amie Souder
dilbert@palmbeach.k12.fl.us
souder@palmbeach.k12.fl.us
Christel Leahy
Heather Trapani
christel.leahy@palmbeach.k12.fl.us
trapanih@palmbeach.k12.fl.us
Terrence Narinesingh
Robera Walker
narinesingh@palmbeach.k12.fl.us
robera.walker@palmbeach.k12.fl.us
Kirk Nieveen
Paul Wojciechowsky
kirk.nieveen@palmbeach.k12.fl.us
wojciep@palmbeach.k12.fl.us
Andrea Reilly
reilly@palmbeach.k12.fl.us