Introduction to Fractions

Introduction to Fractions

by Ashley Brod

​A fraction shows equal parts of a whole or a set of objects.

​Whole

Set of an object

​A fraction has two parts...

​The numerator is the part we care about on top. The denominator is the total parts/pieces in the whole.

Multiple Select

The denominator is....

• a part we care about

• the total pieces all together

• the bottom number

• the top number

​Drawing

and

Cutting

Fractions

Draw

Cut this shape into 2 equal parts

Draw

Cut this shape into 4 equal parts

Draw

Cut this shape into 3 equal parts

Draw

Cut this shape into 5 equal parts

​Fractions can also be drawn on a number line.

​0 to 1 equals one whole. The whole thing was cut into 4 equal pieces. They cut it in the middle first. Then, cut each new piece in the middle again to create 4 equal pieces.

Multiple Choice

How many pieces was this whole line cut into?

• 2

• 3

• 4

• 1

Multiple Choice

What would the fraction be for the dotted point?

• 2/3

• 1/4

• 2/4

• 2/5

Draw

Cut this whole line to show 1/6.

​Equivalent Fractions: Same amount shown, but with different numbers of slices.

1/2 is half. 2/4 is half. 3/6 is half. 4/8 is half.

How to know make an equivalent Fraction

Draw or Multiply (top and bottom by same #)

Multiple Choice

What number can we multiply with 2 to equal 8?

• 2

• 4

• 3

• 1

Multiple Choice

If we multiply the bottom number by 4, we have to multiply the top number by....

• 2

• 4

• 3

• 1

Multiple Choice

What is is the new fraction that is equivalent to 1/2?

• 2/8

• 4/8

• 3'/8

• 1/8