Out of the shopping bag come a dice and a cereal box. These two box shapes are cousins. What is the same about them? What is different?
A solid shape is a shape you can hold, like a box.
A face is a flat side of a solid.
Look at the dice and the cereal box. What is the same about their faces? What is different?
A cube has faces that are all the same square.
A cuboid has long faces and short faces. Not every face is a square.
The gift box looks square from the front. Check the side too before you name it. Turning a shape does not change its name.
Now you are box detectives. Your table has some solids and two pieces of paper, one marked cube and one marked cuboid.
Pick up one solid. Turn it and look at every face. Are all the faces the same square? Put it on the paper that says cube. Are some faces long and some short? Put it on the paper that says cuboid. Then check your partner's choice.
Box detectives
Look at the board. Copy the word cube and beside it write something that is a cube: dice. Copy the word cuboid and beside it write something that is a cuboid: cereal box. Under your words write: check every face.
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