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.
Decimal Place Value with Base-Ten Blocks and Number Lines: Build a Decimal
Build a Decimal is a no-prep digital tool for decimal place value: students build tenths, hundredths and thousandths with base-ten blocks, with wholes and parts kept apart, and see each number in words, as a fraction, in expanded form and on a number line.
Mental Math Strategies for Multiplication: 107 Self-Checking Problems, Instant feedback
Multiplying by 9, 11 and 5, doubling, factors of 100 and 1000, rounding, and halving and doubling explained with base-ten blocks, a free number talk for grades 3 to 5, and a self-checking digital version of the slide deck.
Mental Math Strategies for Addition and Subtraction: 117 Self-Checking Problems
Compensating, decomposing, balancing and clustering explained with base-ten blocks, a free number talk for grades 2 to 5, and a self-checking digital version of the slide deck.
Addition with Regrouping Game: Addition Build
Addition Build is a no-prep digital game for grades 1 to 3: students loop 10 ones and SNAP them into a ten, or 10 tens into a hundred, so regrouping in addition makes sense.
Subtraction with Regrouping Game: Subtraction Smash
Subtraction Smash is a no-prep digital game for grades 1 to 3: students subtract with base-ten blocks and smash a ten into ones, or a hundred into tens, so regrouping makes sense.
Digital Hundred Chart Game-100 Monster Hunt
100 Monster Hunt — a no-prep digital hundred chart game where every ticket is a number in disguise.