Introduction

TRIANGLES

Rising above all the other triangles is a special type of triangle…the equilateral triangle! What are its super powers?  Let’s look at its name. Equi means equal. Lateral means sides. So, an equilateral triangle has three equal sides and three equal angles, therefore, it can do what no other triangle can.

Equilateral Triangles aren’t just mathematically significant, they are also fundamental to the way we build our environments, both physical and virtual. They are exceptionally strong and are by far the most common triangle used in architecture.

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THE LAST SHAPE WINS
A game with equilateral triangles

Object of the Game
Players take turns coloring in different shapes. The winner is the player to color in the last shape that completely fills the shape on the game board.

Materials

>Game board

>Crayons, markers, or colored pencils using 4 colors. Agree on a color for each shape: triangle, rhombus, trapezoid, and hexagon.

Skills

• Identifying shapes

• Combining shapes to make new shapes

• Thinking about a strategy to  help you win

How to Play

1.  Take turns coloring in shapes on the game board.
You could just go back and forth coloring little red triangles, but it might be kind of boring. Instead, try combining triangles to form one of the other shapes shown below.

Triangle                    Rhombus                           Trapezoid                      Hexagon

2.  Choose one color for each shape. For example:  triangle, rhombus, trapezoid, hexagon.

3.  You can color in any one of the 4 shapes (triangle, rhombus, trapezoid, or hexagon) anywhere on the game board each time it’s your turn.

4.  You must take your turn every time, down to the very end.

5.  The winner is the person who gets to complete the game board by coloring in the last shape.

THINGS TO THINK ABOUT …….
How are choosing which shape to color in. There is a lot of strategy involved!

You’ve almost filled the game board, and it’s your turn.
>What would happen if you put a triangle in now?
>What do you think I would do then?
>What if you put in a rhombus?

YOU’RE DOWN TO YOUR LAST FEW MOVES…..
Can you figure out what you need to do to win? Is there a shape you could use that would force you opponent to fill a space but still leave enough room for you to color in the very last shape?

 

LINK TO GAME BOARD:

EQUILATERAL TRIANGLE GAMEBOARD