1/26/2020 0 Comments Number Strings and PatternsDuring number strings, students start with one number sentence and use that to build onto other number sentences, noticing patterns to make sense of more difficult problems. On this day, we started with:
7 + 1 = ____ Students read the number sentence: "seven plus one equals box." We read it a different way, "seven plus one is the same as a number." Once students agreed that the number was 8, we moved on to: 8 + 1 = ____ 9 + 1 = ____ 19 + 1 = ____ "What do you know about the first number sentences that can help you solve this one without counting?" Student: "Well, I know that 20 - 19 is 1, so 19 + 1 must be 20." Another student said, "Well, I see a pattern; 8, 9, 10. And 9 + 10 is 19, so 10 + 10 is 20." "How can this help you with..." 100 - 90 = ____ 119 + 1 = ____
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