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Latest Articles
Multiplying and Dividing Fractions with Area Models and Fraction Bars: Multiply & Divide Fractions
Multiply & Divide Fractions is a no-prep digital tool for grades 5–6: area models for a fraction of a fraction, fraction bars for fraction × whole, and fraction pieces laid along a bar to divide, with every answer in simplest form.
Halloween Multiplication Arrays: Self-Checking Candy Arrays for Grades 2-4
Halloween Candy Arrays is a no-prep, self-checking digital activity: students drag candy groups into equal groups that snap into arrays, then explore the commutative, associative and distributive properties and model multiplication facts. 75 slides.
Balance Builders: Solving Equations with Integers on a Balance Scale
A free look at Balance Builders, a digital game for grades 6 to 8 where students solve equations with integers on a balance scale: zero pairs, subtracting negatives, x on both sides, and free practice problems.
Solving Equations with Integers on a Balance Scale: Algebra Balance with Integers
Algebra Balance with Integers is a no-prep digital tool for solving equations with negative numbers: bags, tiles and red −1 balloons on a balance scale, zero pairs, and negative answers, from x + 7 = 3 to x on both sides and story problems.
Adding and Subtracting Integers tool/game-Integer Heights
Why is 2 − (−3) bigger than 2? Balloons are +1, weights are −1, and taking away a weight makes the balloon rise. The big idea, zero pairs, a free number talk for grades 6 and 7, and Integer Heights, a self-checking digital game.
Adding and Subtracting Decimals with Base-Ten Blocks: Add & Subtract Decimals
Add & Subtract Decimals is a no-prep digital tool for grades 4 to 6: students loop 10 tenths to SNAP them into a whole, or break a whole with a hammer, so regrouping with decimals makes sense. Tenths, hundredths, thousandths and mixed.
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