## math lessons - Mathematics for Teaching

- How to derive the quadratic formula
- Bloom’s Taxonomy and iPad Apps
- Teaching maximum area problem with GeoGebra
- Levels of math teachers expertise
- Math Lessons in Mathematics for Teaching
- DepEd’s Explore, Firm Up, Deepen, Transfer
- Teaching triangle congruence
- Geometry lesson: Collapsible chair model
- Teaching negative numbers via the numberline with a twist
- Understanding by Design, one more go
- Math investigation lesson on polygons and algebraic expressions