Effective 2nd-grade videos typically employ one or more of these four primary strategies to accommodate different learning styles:
Videos often use base-ten blocks or place value charts to show that the value of the number remains the same (e.g., changing 42 from "4 tens, 2 ones" to "3 tens, 12 ones"). 2. Key Instructional Strategies Subtraction with Regrouping - Math Video for 2nd Grade
Using visual "rods" (tens) and "units" (ones) to physically show the "break down" of a ten. Effective 2nd-grade videos typically employ one or more
Jumping backward on a number line to find the difference. changing 42 from "4 tens