*This 3-act task was created to work hand in hand with my Building Fact Fluency Kit. If you’re looking an innovative resource that will help build your students’ understanding for Addition and Subtraction then you will want to check it out over at Stenhouse Publishing. *

**Act 1**

Watch the video

- What do you notice/? What do you wonder?

Choose one main question:

- How many total marbles?
- How many red marbles?
- How many blue marbles?

Estimate the answer to your main question?

**Act 2**

How many total marbles? |
How many red marbles? |
How many blue marbles? |

How many red and blue marbles are in the jar? | How many total marbles and how many blue marbles are in the jar? | How many total marbles and how many red marbles are in the jar? |

**Act 3**

**Click the link here to find more of My 3-Act Lessons**