In this video, the teacher explains how to solve elapsed time word problems using a number line. The examples provided demonstrate how to determine the start time, end time, and change in time, and how to use a number line to find the...

In this video, the teacher explains how to count forward and backward from a three-digit number using number patterns. The lesson emphasizes the base 10 place value system and demonstrates how changing one place can affect the entire...

In this lesson, students will learn how to subtract large numbers by using addition. By understanding the relationship between addition and subtraction, students can reframe subtraction problems as addition sentences and use strategies...