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Play select games from the ST Math seventh grade curriculum for free. Concepts include expressions, multi-step percentages, integer multiplication/division, two-step equations, and more.

Represent visual models with expressions.

- Interpret multiplicative and additive patterns using expressions.
- Model multiplicative and additive visual representations with expressions.
- Levels begin with simple one term elements and progress to mutli-term, multi-operation patterns.

Apply multi-step percent and fractional changes to stacks of blocks.

- Calculate the end height of a stack of blocks that increase/decrease by a given percentage or fractional value represented visually and numerically.
- Interpret percents < 100 as a decrease and percents > 100 as an increase in the height of a given number of blocks.
- Levels begin with finding the sum of two stacks of blocks that changes by a given percentage and progress to finding the product of two percent changes.

Apply integer division to form quotients of a given height.

- Interpret negative signs as flipping the direction of a block, e.g. a 3 block is 3 units above ground level, a -3 blocks is 3 units below ground level (or a hole 3 units down).
^{ } - Dividing by a negative integer involves multiplying by the inverse and reversing the direction of the block.
- Levels start by interpreting division by whole numbers as multiplying by the reciprocal and progress to applying the negative sign to positive and negative integers.

Evaluate or solve for unknowns given a multiplication or division statement on a number line.

- Use visual models to interpret division with integers on a number line.
- Find points on a number line when dividing negative integers by positive integers.
- Levels start by finding the product or quotient of positive integer values posed visually and progress to finding product or quotient of negative integer values posed visually.

Use scaling up or down to change the length of jelly blocks to reach a given point (get JiJi to land on the blastpad).

- Apply division by scaling the given block ≥ 1 times to shrink the block and apply multiplication by scaling the given block ≥ 1 times to stretch the block.
- Develop the concept that the negative sign moves the block in the opposite direction.
- Levels start by stretching the given block n-times in either the positive (green block) or negative (red block) direction and progress to apply quantitative measures to reach an exact point.

Count and match sets of up to 10 objects.

- Develop counting strategies such as 1:1 correspondence and cardinality.
- Levels begin by just clicking on given objects, then progress to selecting equivalent number of squares in the ground.
- As the levels transition, students internalize strategies and connect numerals to the counting sequence.

Develop addition concepts by finding the total number of blocks.

- Add blocks at the start (left side) to the blocks in the middle by selecting the total number of blocks at the end (right side).
- Develop and apply strategies for solving visual addition problems.
- Levels start with sums ≤ 5 by adding up to 2 more blocks and transition to sums up to 10.

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