Number sense means understanding how numbers are built and how they relate to each other. Ideas to understand and make games, puzzles and curriculum out of may include: Bigger than, Less than, Equal to (including decimals, real numbers, fractions, irregular numbers, and percentages), Finding numbers on the number line, combining numbers to see what happens, finding patterns, testing numbers by seeing how they react when we do things to them, and how to categorize numbers (such as even, odd, primes, factors, multiples, square numbers, cubed numbers).
Eventually I will post various activities, games and curriculum plans for you to glean from in order to build good number sense in yourself or a child in your life. In the meantime, you may be able to move forward with just this as your jumping off point. Good luck! Problem to try: Put the following numbers in order from least to greatest: 2/3, 60%, and .5
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