Which technique helps students find half of the corresponding 10s fact?

The technique that helps students find half of the corresponding 10s fact is indeed finding half. This method allows students to take a known 10s fact, such as 20 (which is 2 times 10), and effectively halve it to understand that half of 20 is 10. By applying this technique, students develop a strong foundation in understanding the relationships between numbers, specifically with multiples of ten.

For example, if a student knows that 5 times 10 equals 50, they can use the finding half technique to recognize that half of 50 is 25. This reinforces their understanding of how numbers relate to each other and aids in mental math, making it easier to solve similar problems quickly.

Other techniques, while beneficial in their own ways, do not specifically address this task as effectively as finding half does. Doubling, for instance, means taking a number and increasing it, while count by's involves enumerating integers in increments, and visual groups involve breaking a number into smaller parts visually. Those methods serve different purposes in mathematical understanding.