Teacher Guide
Week 27
Equal Groups & Arrays — Teacher Guide
Monday: What Are Equal Groups?
1
Warm-up 2s
1.
Seq 1 blanks: 8, 14 | Seq 2 blanks: 6, 12, 16
2
Equal Groups
1.
3×4=12, 2×5=10, 4×3=12, 5×2=10
3
Groups Of
1.
2 groups of 4 = 8; 3 groups of 3 = 9; 4 groups of 2 = 8; 2 groups of 6 = 12
4
Number Talk
1.
A has more (same bags, more per bag)
2.
Same total — 2 groups of 6 and 6 groups of 2 both make 12
5
Create Own
1.
Any drawing of 4 groups of 3; total 12
Page break
Tuesday: Arrays
1
Warm-up 5s
1.
Seq 1 blanks: 15, 30 | Seq 2 blanks: 20, 35, 40
2
Arrays
1.
3 rows of 4 = 12; 2 rows of 5 = 10; 4 rows of 3 = 12; 2 rows of 6 = 12
3
Estimate First
1.
4×5=20, 3×6=18 — accept reasonable estimates
4
Addition Equations
1.
5+5+5=15; 4+4=8; 2+2+2+2=8; 3+3+3=9
5
Two Ways
1.
Rows: 4+4+4=12; Columns: 3+3+3+3=12 — same answer!
Page break
Wednesday: Mixed Groups & Arrays
1
Warm-up 10s
1.
Seq 1 blanks: 40, 60 | Seq 2 blanks: 30, 70, 80
2
Mixed
1.
12, 12, 10, 16
3
Word Problems
1.
12 muffins (3×4), 20 cars (4×5)
4
Find Error
1.
✗ — groups are 4, 4, 3 (not equal)
2.
✓ — all groups have 3
5
Create Own
1.
Any 12-dot array: 1×12, 2×6, 3×4, 4×3, 6×2, 12×1
Page break
Thursday: Word Problems with Equal Groups
1
Warm-up
1.
8, 20, 40, 10
2
Word Problems
1.
20 students (5×4), 18 plants (3×6), 12 eggs (2×6)
3
Two-Step
1.
Step 1: 4×5=20 cookies. Step 2: 20−8=12 cookies left
4
Number Talk
1.
Same — 2 rows of 6 and 6 rows of 2 both have 12 (turned array)
2.
Rosa has more — one extra box of 3
5
Create Own
1.
Accept student-created equal-group problems
Page break
Friday: Review & Self-Check
1
Warm-up
1.
2s blanks: 10, 16 | 5s blanks: 20, 35
2
Estimate First
1.
5×4=20, 3×7=21 — accept close estimates
3
Review
1.
3 groups of 5 = 15 (5+5+5); 4 rows of 3 = 12 (3+3+3+3); 4 groups of 2 = 8 (2+2+2+2); 3 rows of 6 = 18 (6+6+6)
4
Word Problems
1.
20 cars, 18 apples
5
Self-Check
1.
Accept student self-assessment and reflection