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Estimate Before You Calculate Poster

I created this Estimate Before You Calculate Poster several years ago when I was teaching trigonometry. We did lots of word problems, and I found that my students were reaching for their calculators without even really thinking about what the problem was wanting.

estimate before you calculate poster

I decided I wanted to encourage students to “Estimate Before You Calculate.” By this, I meant that students would think about what types of answers would be reasonable before ever punching a single number in their calculators.

For example, if I’m calculating the height of a ladder leaning against a building, a good estimate would be 8 feet. A good estimate could also be 15 feet.

Estimate Before You Calculate Poster

If I get a result of .8 feet or 8000 feet from my calculator, that is a sign that I have likely done something wrong. I might need to check my work or my calculator’s mode.

Estimate Before You Calculate Poster

I made a poster with our “Estimate Before You Calculate” motto, and I hung it above the calculator poster in my classroom.

I designed this Estimate Before You Calculate poster to print on 11 x 17 cardstock, my favorite way to make quick posters for my classroom.

Free Download of Estimate Before You Calculate Poster


Estimate Before You Calculate Poster (PDF) (1525 downloads )


Estimate Before You Calculate Poster (Editable Publisher File ZIP) (853 downloads )

The font is ChunkFive Roman.

Want more posters for your classroom? Check out my posters page!

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