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Number 1-10 Relationships

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According to the textbook “Elementary and Middle School Mathematics: Teaching Developentally”, the three important types of relationships for number 1 through 10 include; “one to two more; one and two less, benchmarks between numbers from 5-10, and part-part-whole relationships”.
The one to two more; one and two less concentrate the ideas of adding a number higher and one less than the given number. For example; if given the number 5, the number one more is 6, and less than 5 is 4. An activity to help promote mathematical students would allow them to use “six dot cards”. This could reinforce the idea and allow students to visually see the steps.
Benchmarking numbers 5 and 10 focuses on middle numbers and breaking apart numbers to get the

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