**Geoboard Area 1
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**

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Models Home Page**

**Area on the
Geoboard**

**More
Geoboard Areas**

**Geoboards are a fun way to
learn about area concepts. The geoboards we use in class are 25-pin
geoboards. The pins are arranged in five rows of five in a
rectangular array. Here is a picture of one:**

**We can use rubber
bands to create various shapes on the geoboard and then explore
their areas using various units of measurement.**

**Let's explore the shape below
with a variety of units...**

**We can use any kind of area
unit, but mathematicians have decided that in plane geometry, and
normal measurement, that square units will be used. That means
we'll be using different-sized ***unit squares*. Let's begin
with a 1x1 unit square...

**Now let's see what happens if
we use a 2x2 unit square...**

**Here's one more example, with a
3x3 unit square...**

**We've uncovered an important concept here. The
size of our shape has never changed, but its ***area* has. It's
important to remember that area is a relative concept, dependent on
the unit we've chosen to measure with. It's kind of like *mass*
and *weight*. Our mass never changes, no matter which planet or
moon we're on. Our weight changes, however, because it's dependent on
the gravitational pull of the planet or moon we happen to be
visiting!

**For most of the activities in
this lesson, the 1x1 square will be considered as the unit square.
Don't forget that we can use parts of unit squares, like in the
example above, and that areas can be fractions, not just whole
numbers! Here's some shapes to have fun with.**

**For more on Geoboard Area, go to the
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page****.**