How to Get
Some of My Publications

Math lessons through geometric puzzles in grades 4 through 10:

Working with Pentominoes a book of activities, accompanied by an eBook which can be projected and includes manipulable pentominoes.

On this site:

Geometric Puzzles in the Classroom

An algebra textbook and accompanying materials
by Anita Wah and Henri Picciotto:

Algebra: Themes, Tools, Concepts (ATTC, 1994)

ATTC on line, in color and searchable

ATTC Teachers' Edition

ATTC Teacher Resources

More info and sample lessons

See also:

More on algebra

A manipulatives-based geometry program, to be used as part of or in preparation for any geometry course:

Geometry Labs (1999)

See below for some of the associated manipulatives.

See also:

More on geometry

A book of puzzles and activities on grid paper:

Polyomino Lessons (1986)

See also:

Geometric Puzzles in the Classroom

All three books are available free for your non-commercial use.

Math lessons through geometric puzzles in grades K through 12:

Pentomino Activities, Lessons and Puzzles (1984, 1986)
[going out of print, but possibly still available]

On this site:

Geometric Puzzles in the Classroom

A manipulatives-based algebra program, to be used as part of, or in preparation for any algebra course: The Algebra Lab

The Algebra Lab: Middle School (1990)

Lab Gear Activities for Algebra 1 (1995)
[if you cannot get these from the publisher, contact me]

Some individual replacement parts for the Lab Gear can be ordered from Sprout.

On this site:

Information about the Lab Gear

The Algebra Lab: High School (1990)
Available free for your non-commercial use.

A book of hands-on lessons using models in the Zome System,
by George W. Hart and Henri Picciotto:

Zome Geometry (2000)

On the Web: see George's site.

Geometric puzzles (grades 2-10):

The Math Machine Pentomino Puzzles (1984)

Pentomino Pattern Cards (a subset of same)

[Both are going out of print, so order soon!]

On this site:

Geometric Puzzles in the Classroom.

I will sell you plastic superTangrams at $3.00 a set, plus shipping / handling.

On this site:

My superTangram books can be downloaded here, for your non-commercial use.

See also: Geometric Puzzles in the Classroom.

These are companion manipulatives to Geometry Labs.

Geometry Labs Template

Eight different triangles, ten different quadrilaterals, seven different regular polygons, all the pattern blocks. Perfect for exploring tessellations. Centimeter and inch rulers, unmarked protractor. Can be put in a 3-ring binder. See it as a PDF.

CircleTrig Geoboard

On one side, an 11 by 11 geoboard. On the other, a circle geoboard, with radius 10 cm, and a 360° protractor.

On this site:

The 10-cm Circle

Three lessons on algebra as part of Teaching Mathematics with Manipulatives, an in-service video course (Ed Dickey, editor.)

Articles in The Mathematics Teacher:

"Why I Use Interactive Whiteboards" (The Mathematics Teacher, November 2010.) An earlier version appeared on my Math Education Blog.

"A New Path to the Quadratic Formula" (The Mathematics Teacher, February 2008).
On this site: Parabolas and Quadratics

With Jonathan Choate, "Iterating Linear Functions" (February 1997), an introduction to dynamical systems.

"Make These Designs", a graphing calculator lesson on linear functions (May 1996).

Also: Delving into Functions with Function Diagrams in NCTM's online journal ON-Math (Volume 5, #1, 2006-2007).

On this site: Function Diagrams