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?
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
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.
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.”
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