Solution: There are different ways to organize your thinking -- by row or by column. There are 4 rows with a sum of 1 + 3 + 6 + 10 = 20. Or 10 columns with a sum of 1 + 1 + 1 + 1 + 2 + 2 + 2 + 3 + 3 + 4 = 20.
Labels
- 2D spatial reasoning
- 3D spatial reasoning
- alternate number bases
- area problems
- consecutive numbers and other sequences
- counting problems
- factors and multiples
- finding and extending patterns
- fractions
- geometry
- graph theory
- logic
- nets
- number bond practice for young children
- place value
- practice with addition/subtraction
- practice with decimal arithmetic
- practice with multiplication
- reflections/rotations
20 bricks
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