Week 11 · Area and perimeter
Number Hunt
Number Hunt
// Cover it with squares, walk around the edge
⏱ about 15 min
Saturday: Number Hunt
Hazel and Bennie look around the den with a ruler and sticky notes.
"Let us find areas and perimeters at home," says Hazel.
Bennie covers a small box lid with square notes.
"Two rows of three notes," he counts. "Area: 6 square notes."
Hazel runs a string around the lid. "And now the perimeter!"
Hunt for area and perimeter
Look for flat rectangles at home with a grown-up.
Think of books, trays, tiles and windows.
Find the area and the perimeter of each one.
Try it: Number Hunt
Find three flat rectangles, like a book, a tray and a tile.
Cover one with paper squares and count them for its area.
Measure the sides of each in inches.
Add the sides to find each perimeter.
Cover one with paper squares and count them for its area.
Measure the sides of each in inches.
Add the sides to find each perimeter.
WHAT DID YOU LEARN?
- Read the question.
- Tap your answer.
What is the area in square inches?What is the perimeter in inches?Break apart 3 × 8 into 3 × 5 and 3 × 3. What is the area?
◇ BUILD RECTANGLES WITH A GROWN-UP
Use 12 paper squares, tiles or crackers.
Build as many different rectangles as you can.
Find the perimeter of each one.
Which rectangle has the biggest perimeter?
Build as many different rectangles as you can.
Find the perimeter of each one.
Which rectangle has the biggest perimeter?
Draw the rectangles you built with 12 squares.
For a grown-up
This week your child found area by counting squares and by multiplying.
They broke big rectangles into smaller ones and found perimeter.
Ask them to explain the difference between area and perimeter.
Area covers the inside. Perimeter goes around the edge.
They broke big rectangles into smaller ones and found perimeter.
Ask them to explain the difference between area and perimeter.
Area covers the inside. Perimeter goes around the edge.
Great hunting! Next week Ferris helps us explore shapes, and we review the whole trail.