Grades 4-12
| To add to a secure Shopping Cart, click on the Buy Button. |
|
Set of 6:
for teacher / 1-2 students
250101
|
$22.00 |
on-line
|
|
Set of 24:
for learning center / 6-8 students
250102
|
$84.00 |
on-line |
|
Set of 72:
classroom set / 18-25 students
250103
|
$240.00 |
on-line |
|
Geo-Legs in the Classroom Workbook Grades 8-12
250105
|
$18.95 |
on-line |
| To buy by PHONE, FAX, or with PURCHASE ORDER, print out this page and complete the Order Form. |
|
Students enjoy exploring numerous geometric principles with GEO-LEGS, the all-in-one geometry tool. Made of sturdy, clear polycarbonate, this ingenious manipulative functions as an easy-to-use protractor, a safe compass, and a polygon-building tool.
Hands-on explorations, easily tailored to suit a wide range of ability levels, will provide invaluable insights by enabling students to visualize abstract geometry concepts. Complex theorems become simple and relationships between polygon angles and sides become clear.
Each Geo-Leg consists of two clear plastic arms that rotate around a central vertex which is surrounded by a degree-measurement wheel. The arms have centimeter marks, and the wheel scales indicate 5-degree increments.
Click to view larger version
WITH GEO-LEGS STUDENTS CAN:
- Measure and draw:
| - |
angles |
| - |
arcs |
| - |
circles |
| - |
bisectors |
- Construct:
| - |
4 types of triangles |
| - |
parallelograms |
| - |
trapezoids |
| - |
pentagons |
| - |
hexagons |
| - |
medians |
| - |
parallels and transversals |
| - |
diagonals |
| - |
altitudes |
- Increase understanding of:
| - |
proportionality |
| - |
congruence |
| - |
similarity |
| - |
numerous relationships and theorems involving polygon sides and angles |
 |
This multi-faceted tool allows students to do traditional measurement of static figures, but it also allows for exploration and investigation. My students discovered the triangle-sum theorem by collecting angle measurements as they maneuvered the Geo-Legs. |
|
| - |
Charlotte L. Kessler, Highland High School, Highland, IN
MATHEMATICS TEACHER, October 1999
|
|
|
|
Click to view larger version
Supplementary materials are available to help you make the best use of Geo-Legs manipulatives:
Geo-Legs in the Classroom
is a reproducible workbook. It contains 48 hands-on activities addressing such topics as measuring angles, exploring polygon and circle theorems, and creating geometry-based art.
Geo-Designs,
a transparency/blackline master set, includes 9 different design copyable transparencies which offer you great versatility for your own lessons. An excellent resource for teachers and students - no more lop-sided or squiggly figures!
Geo-Legs kits are available in three sizes:
- Set of 6: for teacher / 1 or 2 students
- Set of 24: for learning center / 6 to 8 students
- Set of 72: classroom set / 18-25 students
Click to view larger version
|
