Conclude by giving your students these challenges:

- Tilted Squares by NRICH
- Poly Plug Rectangles by NRICH
- What's it Worth? by NRICH
- 2019 Math Kangaroo Levels 11-12 Problem #22 by STEM4all

Conclude by giving your students these challenges:

- Tilted Squares by NRICH
- Poly Plug Rectangles by NRICH
- What's it Worth? by NRICH
- 2019 Math Kangaroo Levels 11-12 Problem #22 by STEM4all

- Related rates intro
- Related rates: water pouring into a cone