Grade 2 Unit 3
Lesson 18: Make a Yard Stick
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 3
Lesson 18: Make a Yard Stick
CC BY 2021 Illustrative Mathematics®
Find the value of each expression mentally.
Your teacher will give you a rectangle. The long side of the rectangle measures 5 inches and the short side measures 3 inches.
Use the card to make a yardstick that shows all inch marks from 1 to 36 inches.
Measure the height of your desk using your yardstick.
What do you notice? What do you wonder?
What is the tallest measurement for the desks in the room?
What is the shortest measurement?
Find the difference between the tallest and the shortest measurements. Show your thinking.
Measure the length of your hands from the wrist to the top of your middle finger.
Measure the length of your forearms from the outside of your elbow to your wrist.
Write two equations using the measurements in your group and write two statements describing what the equations tell you.
Equation 1:
Statement:
Equation 2:
Statement: