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Grade 4

CCSS Math Standard: 4.OA.5

Generate a number or shape pattern that follows a given rule. Identify apparent features of the pattern that were not explicit in the rule itself. For example, given the rule “Add 3” and the starting number 1, generate terms in the resulting sequence and observe that the terms appear to alternate between odd and even numbers. Explain informally why the numbers will continue to alternate in this way.

Math Curiosity: A Pattern Packed Triangle

Pascal's pattern-packed triangle is a potent puzzle for pupils to ponder.

Evens and Odds – Addition and Subtraction

When we're adding and subtracting, do evens make odds into evens? Do odds make evens odd? Which one has… more power!?

Doubling Dollars

Say you have a dollar. Say you can double that dollar each day: $1, $2, $4, and so on. How long will it take to reach… one million dollars? Not as long as you might think!