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MATH TOOLS NEWSLETTER - July 30, 2013 - No. 122

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Tool: Geoboard, by The Math Learning Center
Clarity Innovations
The Geoboard is a tool for exploring a variety of 
mathematical topics introduced in the elementary and 
middle grades. Learners stretch bands around pegs to 
form line segments and polygons and make discoveries 
about perimeter, area, angles, congruence, fractions, 
and more.

Tool: Cover Up
Steve Rhine
Cover Up helps students develop a strategy for solving 
algebraic equations that is more intuitive than 
mechanical use of order of operations. Given an 
equation that is "messy" with fractions, exponents, 
square roots, etc., students cover up the challenging 
part of the equation to make it more intuitive to solve. 
Five different levels of problems are included.

Tool: KaleidoPaint
Jeff Weeks
As you draw, KaleidoPaint mirrors your brushstrokes to 
create a beautiful infinitely repeating design. Features:
* 17 symmetry patterns
* Scroll, rotate, zoom
* Curve smoothing
* Area fill
* Reshape and recolor any point, curve or area
* Unlimited Undo/Redo
* Export your favorite paintings to the Photos app, or 
   e-mail them directly to a friend

Tool: Number Rack, by The Math Learning Center
Clarity Innovations
The Number Rack facilitates the natural development of 
children's number sense. Rows of moveable, colored beads 
encourage learners to think in groups of fives and tens, 
helping them to explore and discover a variety of addition 
and subtraction strategies.

Tool: Turkey Feathers
Laurel Pollard
Help the turkey collect his feathers in this addition game.

Tool: Hands-On Equations 1 Lite
Hands On Equations
The unknown X variable is represented by a blue pawn on the 
iPad screen while the constants are represented by number 
cubes. In Lesson 1 the icons do not move. The student uses 
thinking or guess and check to solve the equations. 
Beginning with Lesson 2, the student places the game pieces 
on the balance scale to represent the two sides of the 
equation. Beginning with Lesson 3, the student simplifies 
the equation by removing pawns from the balance to solve 
for the unknown X. The student verifies his/her solution 
by resetting the problem to conduct the check. Feedback is 
provided to the student in the check phase of the problem. 
Touch features are used to move the pieces around.

Tool: Torus Games
Jeff Weeks
Eight familiar games introduce children ages 10 and up to 
the mind-stretching possibility of a "multiconnected 
universe." Games include: tic-tac-toe, mazes, crossword 
puzzles, word search puzzles, jigsaw puzzles, chess, pool 
and gomoku. While playing the games, kids develop an 
intuitive visual understanding of a model universe that 
is finite yet has no boundary. Players who master the games 
in 2D may enjoy the extra challenge of solving 3D mazes 
and playing 3D tic-tac-toe in multiconnected 3D spaces. 
Even though the games were designed with kids in mind, 
adults interested in topology, geometry and cosmology 
have also found them enjoyable and enlightening.


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   The Math Forum @ Drexel -- 30 July 2013