Array Jar Anchor ChartCounting Jar Arrays Equal Rows & Columns Rows = Groups × Columns = Group Size = Total 12 Tiles 3 Rows (3 groups) 1 2 3 4 4 Columns (4 in each row) 3 rows of 4 tiles Repeated Addition 4 + 4 + 4 = 12 Multiplication 3 × 4 = 12 16 Tiles 4 Rows (4 groups) 1 2 3 4 4 Columns (4 in each row) 4 rows of 4 tiles Repeated Addition 4 + 4 + 4 + 4 = 16 Multiplication 4 × 4 = 16 9 Tiles 3 Rows (3 groups) 1 2 3 3 Columns (3 in each row) 3 rows of 3 tiles Repeated Addition 3 + 3 + 3 = 9 Multiplication 3 × 3 = 9 RULE: (Rows) × (Columns) = (Total Tiles) Rows go across ➔ • Columns go down ⬇
Array Jar Notebook HandoutCounting Jar Arrays Rows (across) × Columns (down) = Total Name: Date: 12 TILES 3 × 4 3 rows 4 Columns (in each row) 3 rows of 4 4 + 4 + 4 = 12 3 × 4 = 12 16 TILES 4 × 4 4 rows 4 Columns (in each row) 4 rows of 4 4 + 4 + 4 + 4 = 16 4 × 4 = 16 9 TILES 3 × 3 3 rows 3 Columns (in each row) 3 rows of 3 3 + 3 + 3 = 9 3 × 3 = 9 Cut Line • Notebook Reference Counting Jar Arrays Rows (across) × Columns (down) = Total Name: Date: 12 TILES 3 × 4 3 rows 4 Columns (in each row) 3 rows of 4 4 + 4 + 4 = 12 3 × 4 = 12 16 TILES 4 × 4 4 rows 4 Columns (in each row) 4 rows of 4 4 + 4 + 4 + 4 = 16 4 × 4 = 16 9 TILES 3 × 3 3 rows 3 Columns (in each row) 3 rows of 3 3 + 3 + 3 = 9 3 × 3 = 9
