For over forty years Michael has been doing what he loves: teaching mathematics.  Teaching led him on a wonderful journey from working with high school students, writing Discovering Geometry (along with other math materials), and sharing his professional development services with fellow educators.

Recently his path led him to teach some exciting classes as the “Mathemagician” with local fifth-grade students. These students explored algebra, geometry, and probability, through a variety of games and puzzles. They did it with delight and enthusiasm. No math anxiety here!

Please browse our website for our available materials:  DG textbook, math supplements, the Games and Puzzles series, and geometry videos. Please feel free to contact us with questions. If you were a past student or participant who enjoyed his classes, please let us know. We look forward to hearing from you.

Sincerely, Angie and Michael Serra

[email protected]

October 24, 2015 Maui, Hawaii


"Don't just Cover Geometry, Discover Geometry"


Saturday, October 24, 2015

St. Anthony Junior-Senior High School 

1618 Lower Main St, Wailuku, HI 96793

Room - Wong A

8 am registration

8:30 - 10:10 - Session 1

10:30 - 12 noon - Session 2

In session one, participants will perform investigations of familiar properties of geometry using a variety of tools (which may include: patty paper, compass & straightedge, dynamic geometry software, double-edged straightedge (DESE), string, balloons, fettuccine, ...).

Download 01.HHO.Don't Cover, Discover.10.24.15

In session two, participants will select from among a shortlist of investigations, one investigation that they do not know the answer to, select appropriate tools, investigate, conjecture, and perhaps even prove their discovery.

Download 02.HHO.Investigations in Geometry.10.24.15