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Making equal parts
Joann and Ed are going for a swim. Let's hope they're both prepared!
Learning intention
Students will learn how to:
make and find matching halves.
Success criteria
I will know I have been successful if I can:
- find two halves that make a whole
- color half of a shape
- fold a shape in half.
Prerequisites
- Understand the meaning of ‘fair’
Languages
Reinforce the use of language related to fractions and equality: share, halve, half, equal parts, whole
Misconceptions
- Halves do not have to be equal.
Before the video
- Role play: Demonstrate sharing a group of objects between 2 children. First share unfairly and then share fairly. Ask students what makes a fair share.
During the video
First viewing:
Watch the video without stopping or pausing. Then, ask the children to explain what happened in the video. Begin to draw out key vocabulary or possible misconceptions.
Second viewing:
| Pause point | Key learning | Action/discussion |
|---|---|---|
| 1:10 | Halves of a whole are 2 equal parts | How can they check that they have equal parts? |
| 2:09 | If they share the whole towel fairly they will each have a half | How can they check that they have half each? |
After the video
Mathletics halves cards (halves of shapes or objects):
- Give each student or pair of students a half card.
- Ask the students to find the person/pair with the other matching half.
- Repeat, giving each student a different shape. Ask students to predict/draw the whole shape before they find the matching card.