Definitions
What are Contextual Problems?
Lessons built on context or stories that are connected to children’s lives
This is the fraction of a pizza left if you eat 3 slices from an 8-slice pizza.
5/8
1-(1/4+2/4)
1/4
What is the Associative Property?
When adding three or more numbers, it does not matter what numbers are added first
When you add 342 and 178, this is the total number of units
520
132-48
84
What is base ten?
Counting by groups of tens and ones
You start with 10 marbles, lose 3, and then find 2 more. This is how many marbles you have now
9 marbles
Start with 18 balls, lose 5, and then add 7 more. What is the equation to solve
18-5+7
What are Fraction Set Models?
When the whole is understood to be a set of objects and the subsets of the whole makeup fractional parts
f you share 12 apples equally among 4 friends, this is the fraction of apples each friend gets
3/12 or 1/4
A shop sells 120 candies in the morning and 75 in the afternoon. This is the total candies sold
120+75
195
What is unitary counting?
Count in order by ones
If 3 shelves each hold 8 books, this is the total number of books.
24 marbles
1/3+1/3+1/3
1