Handfuls of cubes

Try to figure out if the following two sets of hands have an equal or unequal amount of cubes.

How do you know?

Equal or unequal amounts

Task 1

The following pairs of hands should have equal amounts of cubes, but one of the hands is missing cubes.

How many cubes should be in the empty hand so that each of the pairs are equal?

Task 2

Examine the following sets of hands. The pairs of hands should have equal amounts of cubes, but one hand is empty.

How many cubes are missing? How do you know?

You may wish to use blocks, tiles, a number line, or other materials to help you solve these problems.

Task 3

Examine the following three sets of hands. Do the pairs of hands show equal amounts or unequal amounts?

Record your ideas in a notebook or a method of your choice.

Find the missing numbers

Examine the following three sets of hands. There should be an equal number of cubes in each pair of hands, but one of the hands is empty.

Figure out the missing number in each empty hand. Explain how you know.

You may wish to use counters or blocks to help count and support your thinking!

Record your ideas in a notebook or a method of your choice.

Reflection

How do you feel about what you have learned in this activity? Which of the next four sentences best matches how you are feeling about your learning? Press the button that is beside this sentence.

I feel...

I have an excellent understanding of the concepts I have a very good understanding of the concepts I have some understanding but need to review some more my understanding of the concepts needs a lot more work

Now, record your ideas about your feelings using a voice recorder, speech-to-text, or writing tool.