# Day 2 with Michael Serra’s Patty Paper Geometry

I’m doing some work in Michael Serra’s Patty Paper Geometry book with my younger son over school break. Yesterday’s project was about finding angle bisectors and perpendicular bisectors using paper folding. Today he wanted to extend that work by finding incenters and circumcenters of triangles. He did the folding to find the circumcenter of a … Continue reading Day 2 with Michael Serra’s Patty Paper Geometry

# Studying inscribed circles with Patty Paper Geometry

It has been a while since we did a project inspired by Patty Paper Geometry: This morning I thought it would be fun to revisit an old project and study inscribed circles via folding. One of the most difficult parts of this project was finding our box of patty paper! We started by reviewing inscribed … Continue reading Studying inscribed circles with Patty Paper Geometry

# Returning to Patty Paper Geometry

I had a busy week at work last week and didn’t plan ahead for today’s Family Math. Luckily we’ve got plenty of math books laying around and the boys grabbed Patty Paper Geometry off the shelf. My younger son thought that the project exploring the interior angles of polygons would be fun, so we jumped … Continue reading Returning to Patty Paper Geometry

# Revisting a challenging AMC 10 problem with Patty Paper

Earlier this week my older son and I looked at problem #11 from the 2011 AMC 10a: That earlier project is here: Asking Better Questions and the entire 2011 AMC 10 a can be found here: The 2011 AMC 10a hosted at Art of Problem Solving Today I wanted to revisit the problem from the … Continue reading Revisting a challenging AMC 10 problem with Patty Paper

# Inscribed and Circumscribed circles with Patty Paper Geometry

We tried another project from Patty Paper geometry today for our Family Math project. I can’t say enough good things about this book – studying geometry through folding is absolutely incredible. Here’s the book: There were two parts to our project today – studying a bit about the circumscribed circle and then the inscribed circle. … Continue reading Inscribed and Circumscribed circles with Patty Paper Geometry

# Exploring triangle congruence with Patty Paper Geometry

I asked the kids what they wanted to do for our Family Math project today and they told me they’d like to do another project from Patty Paper Geometry: We found a neat way to explore triangle congruence in Chapter 8, so we dove into that project this morning. Here’s the introduction and a brief … Continue reading Exploring triangle congruence with Patty Paper Geometry

# More Patty Paper geometry + another viral math problem

Earlier this week Michael Pershan was asked for ideas about how to introduce constructions. One suggestion was using patty paper: It has been a while since our first Patty Paper Geometry project, so I thought we’d give it another try ðŸ™‚ Flipping through the book last night I found a project in section 4.1 about … Continue reading More Patty Paper geometry + another viral math problem

# Patty Paper Geometry

Saw this interesting recommendation from Kate Nowak on Twitter last week: The book (and some extra patty paper) arrived today and it looks like it has some great activities. I found one that seemed fairly easy to implement and gave it a shot with both kids. The project is a little lesson about the perpendicular … Continue reading Patty Paper Geometry