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Geometry        Next >

 

Geometry:

Gumdrop Geometry

 

Today's Snack: We're going to be working with gumdrops, so no doubt a few will find their way past your lips. And that's OK: sweets are sweet! But for your main snack today, let's make something kind of wacky out of foods that are better for you than gumdrops. We all know about using gumdrops to decorate gingerbread men cookies. They make great eyes or buttons. Well, let's make a sugar-free gingerbread man - out of vegetables! No gumdrops or other sweets involved. Take a clean plate and have vegetables on hand with a cutting board and a sharp knife. Use adult supervision for the knife if necessary. Here are some ideas: Cut slices of potato or jicama for the body so that they'll lie flat and you can put more body parts on . . . shredded carrot for the hair? . . . raisins for the eyes? . . . fresh peas for the buttons? . . . celery slices for the arms and legs . . . you get the idea. Now run, run, as fast as you can - you CAN catch him - he's the Vegetable Man!

 

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Supplies:

A sack of gumdrops (small or mini-size) | Toothpicks

Paper plates or napkins

 

 

Geometry is the sweetest math. That's because it takes shape before your very eyes. It doesn't just lie flat on the paper, like other kinds of math. It can feed your sweet tooth, too, if you make shapes in with gumdrop geometry!

 

Use gumdrops and toothpicks or skewers to form the following geometric shapes. Most should lie flat, although there are a few at the end which will be three-dimensional, like a gumdrop-toothpick sculpture.

 

It's OK to break the toothpicks or skewers into different lengths.

 

If you think you might eat these later, you'd better work on paper towels or paper plates. But it's not OK to eat the gumdrops . . . until you've shown off your work!

 

Have fun, and build these shapes:

 

 

 

 

Shape Number of Sides

 

Triangle 3 (any lengths)

 

 

Isosceles Triangle 3 (2 the same length

(that's eye-SAUCE-uh-leez!)

 

 

Equilateral Triangle 3 (all the same length)

 

 

Scalene Triangle 3 (all different lengths)

(that's SKAY-leen)

 

 

Rectangle 4 sides, 2 equal lengths

+ 2 more equal lengths

 

 

Square 4 sides, all equal lengths

 

 

Rhombus 4 equal sides, diamond shape,

corners not right angles

 

 

Trapezoid 4 sides with 2 parallel and not

the same length, and the

other 2 diagonal

 

 

Pentagon 5 sides

 

 

Hexagon 6 sides

 

 

Heptagon 7 sides

 

 

Octagon 8 sides

 

 

Decagon 10 sides

 

 

Pyramid 3-D = "three-dimensional" -

a solid form, not a flat one;

the base is a polygon = any

number of sides, but the

sides are triangles that

meet at a point at the top

 

 

Cube A 3-D figure with 6 equal squares

 

 

Pentahedron The grand finale! This is a 3-D

figure with five faces:

examples include a "tent card"

with 3 triangles for the sides and

two triangles for the "end caps,"

or a "prism," with 3 long

rectangles for the sides and two

small triangles for the "end caps"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

By Susan Darst Williams www.AfterSchoolTreats.com Math 2010

 

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