Mathematics
Remember?
3 quick questions from earlier weeks · about 3 minutes
- 17 − 8 = ? Facts to 20
- A rectangle is split into 4 rows and 4 columns of same-size squares. How many squares? Week 28
- A bar graph of pets shows: dogs 5, rabbits 4, cats 9. How many pets in all? Week 26
Objective: Students will partition circles and rectangles into two equal shares and describe them as halves (2.G.A.3).
- 10 min — Warm-Up: Spiral from Week 28: draw a rectangle with 2 rows of 3 squares and ask for the total and the repeated addition sentence. Then ask, 'If two people shared this cracker fairly, how much would each get?'
- 15 min — Mini-Lesson: Fold a paper circle in half and a paper rectangle in half, showing that the two parts match exactly. Say, 'Two equal shares are called halves. Each part is one half of the whole.' Then fold a rectangle unevenly and ask why those are not halves.
- 15 min — Practice: Your child cuts a slice of bread, a paper plate, and a paper rectangle into halves, checking each by stacking the two pieces. Then they draw three rectangles and show halves three different ways: a vertical line, a horizontal line, and a diagonal line.
- 5 min — Wrap-Up: Ask, 'Can halves of the same shape look different?' Show the vertical and diagonal halves and confirm that both are two equal shares.
Materials: paper circles and rectangles, scissors, slice of bread, paper plate, pencil