I started off introducing the lesson using Dan Meyer's idea here. Students had great debates about which triangles are useful in finding the height of the lamppost. Some students came to the board and drew triangles on the house in the background, or other random locations, then I asked, which of these triangles are similar? … Continue reading Day 136: indirect measurement

# ISN

# day 109: scatter plot notes & correlation

Today I borrowed an interactive note page from Sarah Rubin at Everybody Is A Genius. I felt like it went OK, but it took longer then I would have liked and I found myself getting frustrated that few students really were thinking while most chatted and just copied someone nearby. I really liked the activity, … Continue reading day 109: scatter plot notes & correlation

# Planning the next six weeks of Geometry

I really struggled planning the next six weeks of the school year for geometry. Although I hate it, the big fat state testing happens mid March. Probability & statistics is addressed heavily, and since my students have not seen it much, and it is important, and it is included in our states adoption of the … Continue reading Planning the next six weeks of Geometry

# Day 101: Trigonometry notes

Today I talked too much. I'd prefer to break this over 2 days in order to better support students understanding. Left side was just 8 basic practice problems.

# Day 93: Parallel & perpendicular slopes

We had a 2 hour delay today, but students were able to complete this with very little talking from me!