Lesson 7 Different Square Units (Part 2)
Let’s learn about larger square units.
Warm-up Notice and Wonder: A Bigger Square
What do you notice? What do you wonder?
Activity 1 Square Feet and Square Meters
This is a square meter.
What kinds of areas would make sense to measure with square meters? Be ready to explain your reasoning.
This is a square foot.
What kinds of areas would make sense to measure with square feet? Be ready to explain your reasoning.
Activity 2 Which Square Unit?
Problem 1
For each area tell if you would use square centimeters, square inches, square feet, or square meters to measure it and why you chose that unit.
The area of a baseball field
The area of a cover of a book you’re reading
The area of our classroom
The area of a piece of paper
The area of the top of a table
The area of the screen on a phone
Problem 2
Choose the area that best matches each item. Be ready to explain your reasoning.
About 9 square inches
About 3 square feet
About 55 square centimeters
About 55 square meter
A playing card
The floor of a classroom
A sticky note
The top of a student desk
Activity 3 Area Scavenger Hunt
Find some object or space that you would measure with square inches, square centimeters, square feet, and square yards.
area | square unit and reasoning |
---|---|
Example: a piece of paper | Example: “I think it can fit about 8 inches across and 10 inches down, so square inches work well. It can be measured in square centimeters, too, but would just take a lot more squares. Square feet and square meters would be too large.” |
Practice Problem
Problem 1
For each object, decide if you would use square centimeters, square inches, square feet, or square meters to measure its area. Explain your reasoning.
a baseball field
a table top
a cell phone screen