Key learning points

1. A change in length can be described using multiplication or division.
2. Comparison and change problems can be represented visually to support understanding.
3. To find ___ times a length, we know we will be multiplying the length by ___.
4. To find a unit fraction times a length, divide the length into the number of equal parts represented by the denominator.

Common misconception

Keywords

• Comparison - When a comparison is made, we are determining how different two objects are. In this case, how many times longer, taller or deeper an object is than another.

• Change - A comparison can also be made between an object before, and then after, a change. Examples of a change include a change in height of a flower due to growth.

• Unit fraction - A unit fraction is a fraction where the numerator is one.