Author:
CHRIS BRENNAN

This tutorial covers Math in Focus Lesson 12.1 (Real-World Problems: One-Step Problems). I begin by "recalling prior knowledge" about bar models and then move on to using bar models and addition, subtraction, multiplication, and division to solve real-world problems.

Tutorial

This video will show you how to use addition and a part/part/whole bar model to find the answer.

In this problem, I use addition and a part/part/whole bar model to find the answer.

In this video, I use addition and a part/part/whole bar model to find an answer, and then convert the answer from grams to kilograms. Remember: 1000 grams = 1 kilogram!

In this video we use addition to find the answer, and then convert meters into kilometers. Remember, 1 kilometer = 1,000 meters!

Are we adding in this video? No! This problem calls for a comparison bar model instead of a part/part/whole bar model to find the answer.

In this video, I use multiplication and a bar model to find the answer to two different problems.

To conclude Lesson 12.1, I use division and a bar model to find the answer.

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