User:Linterlo/My sandbox

= Are Fractions Commutative? =

Creating Fraction Strips

 * Use pre-cut pieces of paper
 * On the first piece of paper write 1 and one whole.
 * The second piece is folded in half, write 1/2 and one half
 * Continue for quarters and eighths

Using Fraction Strips for Multiplication

 * write the equation in symbols e.g. 1/3 x 3/8
 * Then use the language e.g. 1/3 of 3/8
 * Using the strip with eighths, cover all but three eighths.
 * Visually it is easy to see that one third of three eighths is one eighth
 * What other fractional multiplication problems can you solve with your fraction strips?

Commutative Property of Mutiplication

 * 3 x 4 = 4 x 3 (even though they don't look the same)
 * Does 1/3 x 3/8 yield the same answer as 3/8 x 1/3?
 * What is the answer if we swap just the numerators? e.g. 3/3 x 1/8?

Fraction Strips http://www.nzmaths.co.nz/sites/default/files/Numeracy/2007matmas/Bk7/MM%207_7.pdf