There are many links on the Schedule page.

Geometry Labs

Much of the work we will do is based on my book Geometry Labs. I did not include a handout in the packet for every activity drawn from the book. Geometry Labs includes many more labs than I have time for in the workshop, plus answers and abundant teacher notes about all the labs. It is available for free download on my Web site. The site also includes corrections, extensions, and suggestions from users of the book.

Angles: Chapter 1

Puzzles: Chapters 2, 4

Polygons: Chapter 3

Symmetry: Chapter 5

Triangles and Quadrilaterals: Chapter 6

Tiling: Chapter 7

Area: Chapter 8

Pythagorean theorem: Chapter 9

Similarity and Scaling: Chapter 10

Henri Picciotto’s Math Education Page

Some of the work will be based on material that is available elsewhere on my Web site. On some of those topics, there are many more documents available on the site than you have in your packet. You'll also find teacher notes, some answers / solutions, and pedagogical / philosophical comments. Relevant pages for additional materials and ideas:

Geometry Labs Template documentation


Kinesthetic Activities

Middle School

Tool-Rich Pedagogy

Special papers


Introduction to Angles

Blank "pie chart" worksheets, and a GeoGebra file to make your own blank pie charts.

Pattern Blocks home page

Symmetry home page (includes a unit for grades 4-6, parts of which would be great for middle school)

Geometric puzzles home page (especially pentominoes and supertangrams)

Not exactly geometry, but hands-on and visual: Fraction Arithmetic on Grid Paper

See also the GeoGebra page on this site.

If you'll be teaching a high school geometry course

A blog post about a geometry book that influenced me a lot.


Teaching Proof

Urban School’s Math 2 (when I worked there)

See also Transformations for transformational proof

Cutting a rectangle, rearranging the pieces to make a square: solution in two cuts, three pieces

Working with Pentominoes

by Henri Picciotto

working with pentominoes

Available from Didax. Includes an interactive DVD of the whole book which allows you to project any page, solve puzzles on-screen, search, and more.