# Act 1

**Watch the video:**

Also: Card House Act 1 from Mike Wiernicki on Vimeo.

Suggested Questions:

- How tall will the card house be when it’s finished?
- How many cards/decks of cards were used to make the card house?
- How many card triangles were used to make the card house?

Make a best guess estimate.

Make a guess that you know is too low.

Make a guess that you know is too high.

# Act 2

What information do you need to answer your question? Supply information to students as they ask for it.

- Card House Act 2-Dimensions of Card Triangles
- Card House Act 2-Cards in each deck used to build the card house
- Act 2 – Card House info

Support pairs/groups of students with least helpful questions as they struggle to answer their math question(s).

# Act 3

Students share strategies and solutions, using precise mathematical language and calculations. Students should discuss various strategies and look for efficiency and flexibility in other students’ thinking.

Questions to ask

- How close was your best guess estimate?
- What patterns did you notice?
- How can you explain those patterns?

**The reveal:**

Height of Card House

Number of Cards Used

Number of Card Triangles Used