February Math Lessons www.freepptbackgrounds.net 2/6/17 Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. ❖ Warm-up ➢ Video ■ Multiplication Algorithim ➢ Board Practice Practice Work practice pg 1 practice pg 2 I will check after the first 2 rows are complete, then you can continue working. Turn in when finished. Introducing Variables! What does unknown mean to you? What does it mean in math? What is the word we use in math for the Partners will watch the video and discuss unknown? Variables in math 2/13 Introduce linear equations with one variable where the coefficients are represented by variables and write the answers to the following questions: 1. Work out the birthday equation for each of you. 2. Explain how the fruit equation always works out to 4. 3. Plug in the variables to make 9 seats in the coffee shop. 4. My number is 935, what is my birthday? 2/14/17 Set up linear equations with one variable where the coefficients are represented by variables, solve by using the inverse operation Warm-up The goal of solving an equation is to find the value of the variable. To do this isolate the variable on one side of the equation using Inverse Operations. Inverse operations “undo” each other! Practice Work practice pg # 1-12 practice pg 2 # 1-14 Turn in when finished. Inverse of addition? ___________________ Inverse of subtraction? ________________ Inverse of multiplication? _______________ Inverse of division? ___________________ TOGETHER you will create an Anchor Chart that defines variables and what steps you would use to solve the equations 2/15 Practicing Variables When Algebra problems have an unknown variable you must isolate the variable to the solution side. I will do the first one Now, we will do this one together. Solve linear equations with one variable where the coefficients are represented by variables. You try these More Practice 26 = 18 + v 3+p=9 15 - b = 23 -9 + n = 15 m + 6 = -12 x - 9 = 13 m - 7 = - 17 p-6=-4 v + 15 = -27 n + 16 = 10 -99 = 3x 9b = 54 Thursday - IXL Practice We will also look at the ACT WEBSITE www.freepptbackgrounds.net 2/17 /17 ❖ Warm-up ➢ Board Practice Practice Work I will check with you to see if you understand these, then you can continue working. Turn in when finished. 2/21 /17 So, we know variables, now what? We need ot be able to simplify. So, write this information in your IN so you can refer 4 + 7m + 2 + 6m back to it. What can you do? ● Balancing equations ● Inverse operations What did you do first? ● Properties ● What do I do with a Then what did you do? negative variable? Did we do it right? 2/27 /17 Warm up - simplify the following -4 - 10v -2V2 -7v + 10 1 + 9c - 7c -8 -8c What if we throw in a second variable? 1b + 9c - 7c + 8b Can we solve these? Why/why not? What can we do? What must we have in order to get an answer? Practice Problems on sheet. What if you know the value of the variable? Practice Problems on sheet 2/28 /17 Warm up -2(9 + 7b) -5 + n/3 - 2n Now, try these: -2(7-n)+4 n= -3 What do we do with equations? 3=10-n -33v-49v v= -2 Practice Problems on sheet. Practice Problems on sheet 3/1 /17 What do we do when 7n+3 = 3n + 27 Practice Problems ● ● ● What to do first What to do next Then what This is the basic practice we have done for the past few days. Practice Problems on sheet