Introducing....Our New Math Investigations Unit!!!
Mathematical Emphasis:
Investigation 1—Working with 100
Finding and counting by factors of 100
Recognizing factor pairs of 100
Using landmarks to find differences between numbers under 100 (the difference between 48 and 100 is 52 because 48 to 50 is 2 plus 50 more is 100)
Investigation 2—Exploring multiples of 100
Using knowledge about the factors of 100 to explore multiples of 100
Relating knowledge of factors to division situations and to standard division notation
Adding and subtracting multiples of ten to numbers in the hundreds
Solving addition and subtraction problems by reasoning from known relationships
Communicating strategies orally and on paper through use of words, pictures and numbers
Tips For Helping At Home
Questions To Ask:
What is the problem about? Tell me in your own words.
What did you do in class to get started?
Can you solve a simpler version of the problem?
What have you already tried? What steps did you take?
Did you show all of your work?
Does the answer make sense?
How do you know your answer is correct?
Helping At Home
Look for opportunities to estimate quantities at home, especially large numbers.
Play Investigations games sent home in this unit: “101 to 200 BINGO.”
Find real life examples of large numbers (newspaper, at home, at the store) to discuss or examine (how many peas in the package, etc.).
Vocabulary Terms
Factor
A whole number that can be divided evenly into another number
Landmark Number
Numbers that are familiar and can be used to solve other unfamiliar problems
Multiple
A mathematical operation where a number is added to itself a number of times
Product
The result when two numbers are multiplied
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