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Math in Focus - 3A Lesson 12.1 (including Recall Prior Knowledge)

Math in Focus - 3A Lesson 12.1 (including Recall Prior Knowledge)

 
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Author: CHRIS BRENNAN
Objective:

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.

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Tutorial

Video 1: Recall Prior Knowledge - Comparison Bar Models

Video 2: Part/Part/Whole Bar Models with both parts known

Video 3: Recall Prior Knowledge - Part/Part/Whole Bar Models with one part unknown

Video 4: Lesson 12.1 Guided Practice 1

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

Video 5: Lesson 12.1 Guided Practice 2

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

Video 6: Lesson 12.1 Guided Practice 3

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!

Video 7: Lesson 12.1 Guided Practice 4

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

Video 8: Lesson 12.1 Guided Practice 5

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.

Video 9: Lesson 12.1 Guided Practice 6

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

Lesson 12.1 Guided Practice 7

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

Questions and Answers

  • Jeremy
    Answer 1
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    Jeremy — about 2 years ago

    I'm a fourth grade teacher. I just wondered what software you used to make your videos?

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      CHRIS BRENNAN answered about 2 years ago

      Hi Jeremy,

      Nothing complicated- I use Smart Notebook to model the problems (with the SmartBoard) and Quicktime to record. If you go to Quicktime Player/File/New Screen Recording, you can capture everything on the SmartBoard. I use a set of USB headphones with a built-in microphone to record the narration as I'm solving the problems. You could also drag the video into iMovie to edit, but I'm not fluent in that program!

      Hope that helps!

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