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### Supreme Court Welcome

6-8

Experience
the triangular numbers in an interesting real‑world context of the Supreme
Court. ### Travel in the Solar System

6-8

Think
about two aspects of the time required to complete space travel within the
solar system.### Using Cubes and Isometric Drawings

6-8

Explore polyhedra using different representations and perspectives for three dimensional block figures.

### Visualizing Squares and Square Roots

6-8

Use geoboards to visualize the geometric meanings of square and square root.

### Using an Elevator to Evaluate Signed Number Expressions

6-8, 9-12

Using an Elevator to Evaluate Signed Number Expressions Using the idea of an elevator moving up and down, students will be given a small set of rules to add and subtract signed integers. The idea behind the method of adding and subtracting signed integers offered in these lesson is that the number of rules that s

### Can You KenKen?

3-5, 6-8

The objective of this lesson is to use combinations to solve KenKen puzzles. An early solution strategy is for students to guess and check and use logic-based elimination. This lesson builds on those strategies by having students systematically list all possible combinations within each cage, the darkly outlined sections of the puzzle.