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Author:Maurici Carbó Jordi
Description: Math teaching resources built by architects include base 10 block manipulatives; a block construction toybox; a logic construction toybox; an area workshop; and MathCats balance. See, in particular, Nummòlt's open-ended obbl & math toys: adding apples and oranges (mental algebra, with a pre-algebra tool that introduces 2 × 2 Gaussian elimination); adding apples, oranges, and pears (3 × 3 Gaussian elimination); adding apples, oranges, pears, and lemons (4 ×4 Gaussian elimination); crossing the river with a wolf, a goat, and a cabbage; a time calculator, for practicing subtraction of hours and minutes; dancing numbers (divisibility and modular arithmetic); spelling fractions, which displays numerators and denominators written out, reduced to lowest terms, and on a pie chart; a fraction pie tool; place value cakes; and more.

Levels: Late Elem. (3-5), Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Problems/Puzzles, Web Interactive/Java
Math Topics: Basic Algebra, Arithmetic/Early Math, Logic/Foundations, Pre-Calculus

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