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Number Trail Grade 5 / Week 11 / Number Hunt
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Week 11 · Build with cubes

Number Hunt

Number Hunt
// Volume: unit cubes, layers and length × width × height
⏱ about 15 min

Saturday: Number Hunt

Hazel the Hedgehog and Bennie the Bear set off with a ruler and a notebook.

"Boxes are everywhere," says Hazel, pointing to the shelves.

"There are cereal boxes, tissue boxes and toy boxes."

Bennie holds up his ruler. "Let us measure them and find their volumes."

"Then we can see which box holds the most," says Hazel with a smile.

Hunt for boxes at home

Go on a hunt with a grown-up.

Find boxes of different sizes.

Measure each one in inches and write the numbers in a notebook.

Try it: Number Hunt
Find three boxes of different sizes.
Measure the length, width and height of each to the nearest inch.
Multiply to find each volume in cubic inches.
Which box has the greatest volume? Which has the least?
WHAT DID YOU LEARN?
  • Read the question.
  • Tap your answer.
A box made of unit cubes: three long, two deep and four tallHow many unit cubes make this box?
A tissue box is 6 inches by 3 inches by 4 inches. What is its volume in cubic inches?
Which unit do we use for volume?
◇ BUILD WITH A GROWN-UP
Gather 24 blocks, dice or other small cubes.
Each of you builds a box shape using all 24 cubes.
Write the length, width and height of each box.
Check that length × width × height is 24 for both boxes.
On paper, draw the biggest box you found and label its sides.
For a grown-up
This week your child learned that volume is the space inside a solid shape.
They counted unit cubes and used volume = length × width × height.
They also added the volumes of two boxes that sit side by side.
Ask them to find the volume of a box at home and explain each step.

Great hunting! Next week Ferris leads us onto the coordinate grid.

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