File Cabinet  Act 1
skips
questions
Act One
Act Two
 Teacher noteBefore giving students the actual dimensions, have them make estimates. Use Mr. Stadel's height as a comparison. Use the link to Estimation180.com to find out Mr. Stadel's height.
I've included enough pictures to unveil the dimensions separately or all at the same time (the "depth" pic has all three).
Students might ask if Mr. Stadel will cover all six sides (faces) of the cabinet. This is an important question to address. Ask students what makes the most sense: all six sides, or just the five visible sides? Maybe have students come up with two answers.
When students are solving, encourage multiple representations in Act 2. Refrain from giving students any formula for the surface area of a [rectangular] prism. Instead, encourage students to come up with the most efficient way to calculate the number of stickies.
Upon completing Act 2 (early finishers) challenge students to:
*Derive a formula (process) for the surface area of a rectangular prism.
**Derive a formula (process) for the surface area of any prism.
***Address one of the sequel tasks.  ImageFCAct21 [ESTIMATE cabinet]
 ImageFCAct22 [height]
 ImageFCAct23 [width]
 ImageFCAct24 [depth]
 ImageFCAct25 [ESTIMATE sticky]
 ImageFCAct26 [sticky]
 LinkMr. Stadel's height [Estimation 180]
Act Three
Sequel
 1.
If you had 1,000,000 stickies, what kind of file cabinet could they cover?
 2.
If the WIDTH of the cabinet was doubled, how many more postits would be needed?
 3.
If the HEIGHT of the cabinet was doubled, how many more postits would be needed?
 4.
If the DEPTH of the cabinet was doubled, how many more postits would be needed?
 5.
How long would it take to cover if it took 40 seconds for every 5 stickies?
 6.
Would it be faster to write the numbers & stick? OR stick & then write the numbers?
 7.
What formula (process) could you come up with to calculate the surface area of a [rectangular] prism?
show 58 more questions

How many postits? This is a great way to introduce area/surface area. I would do this before I started talking about square inches/feet.




How many postit notes will it take? How many stacks of 100 postit notes to fill the cabinet?

Is it faster to [write then stick] each one, or to [stick them all] then write the numbers?

How many PostIts will cover the cabinet? (and, frankly, to what end?)












Awesome! Would 3M sponsor this? How long will it take to finish the whole thing?


How many stickies will it take to cover the entire surface area of the cabinet?


















How many post it notes will cover the entire filing cabinet? (Nice work making the video, BTW)


How many papers could he have put on the surface of the cupboard (all six sides)?





How many post its will it take to cover the entire surface of the filing cabinet?









How many sticky notes will cover the back? How many to cover the whole cabinet?

If he stuck Post it notes over the whole surface, what number would he get to?


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