Mental Math Strategies for Division: self-checking, instant feedback
Halving, doubling, dividing in steps, multiples of 10 and partial quotients explained with dot arrays and base-ten pictures, a free number talk for grades 4 to 6, and a self-checking digital version of the slide deck.
Math Talks : Why Open-Ended Questions Matter, and 150 That Check Themselves
Why math talks build reasoning and number sense, why open-ended questions with more than one right answer matter most, and a self-checking set of 150 math talk cards in 15 styles
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.
Problem Solving Strategies: 112 Self-Checking Word Problems
The six problem solving strategies explained, with free word problems for grades 4 to 6, and a self-checking digital game where every solution shows the strategy.
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.
Multiplication Arrays Game: Arrays with Bricks
Arrays with Bricks is a no-prep digital game for grades 2 and 3: students snap bricks onto a baseplate to build arrays and equal groups, find factor pairs and explore the properties of multiplication.
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.
Multiplication, Division, Factorization Game - Free the Monsters
Free the Monsters is a no-prep Halloween math game for grades 4–6: divide each monster’s number down to 1 to set it free, practising multiplication and division facts, divisibility, multiples and factors.