Mathematics
Remember?
3 quick questions from earlier weeks · about 3 minutes
- 18 − 9 = ? Facts to 20
- How many sides does a hexagon have? Week 27
- A line plot shows 3 Xs over 3 inches, 2 Xs over 4 inches, 3 Xs over 5 inches. How many objects were measured? Week 25
Objective: Students will partition a rectangle into rows and columns of same-size squares and count the total (2.G.A.2).
- 10 min — Warm-Up: Spiral from Week 27: show a cracker box and ask, 'Is this a cube? How many faces does it have?' Then hold up one square cracker and ask, 'How many sides? How many vertices?'
- 15 min — Mini-Lesson: Lay square crackers on a sheet of paper in 2 rows of 4 and trace around the outside to make a rectangle. Explain that rows go across and columns go up and down. Say, 'This rectangle has 2 rows and 4 columns. Let's count the squares: 8.'
- 15 min — Practice: Your child uses square crackers or sticky notes to fill rectangles you draw: 3 rows of 3, 2 rows of 5, and 4 rows of 2. For each they write the number of rows, the number of columns, and the total squares.
- 5 min — Wrap-Up: Ask, 'What must be true about all the squares inside one rectangle?' (Same size, no gaps, no overlaps.) Eat one cracker to celebrate.
Materials: square crackers or square sticky notes, paper, pencil