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[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is the difference between a numerical expression and an algebraic expression?

In the following expression, what number do you think belongs in the box? 8 + 4 = + 5

True or False 4  3 + 2 = 14 6  7 = 42 8 + 2  5 = 12 3 + 7 = 7 + 3 9 = 3  3 6 = 6

Open Sentences 5  6 = 32 ÷ = 8 4 + 5 = - 1 4  7 = 7  7 - = 6 - 4 = 10 - 1 + 14 = 14 + 9

True or False 674 - 389 = 664 - 379 5  84 = 10  42 37  54 = 38  53 64 ÷ 14 = 32 ÷ 28

More Open Sentences 73 + 56 = 71 + 126 - 37 = - 40 20  48 =  24 68 + 58 = 57 + 69 +

Writing True/False Sentences ,[object Object],[object Object],[object Object]

Incredible Expressions ,[object Object]

Variables Used as an Unknown Value ,[object Object],[object Object],Mathematician’s Rule - if the same symbol or letter appears more than once in an equation, then it must stand for the same number every place it occurs

Complete the Open Sentence ,[object Object]

True or False ,[object Object],Is this true for any numbers? Try to state the idea in words without using a specific number.

Odds and Evens ,[object Object],[object Object],[object Object]

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