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OPPOSITE DAY (JAN. 25) - PUBLIC RECAP
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Problem Set Recap
For this Opposite Day (Jan. 25) activity, students use inverse operations to work through expression strings to find "mystery numbers." Go even further with some friendly competition using Mathlete-generated expression strings.
Materials Needed
- 1 problem set
- 50-75 pieces of paper (scraps, partial sheets or post-its)
- Markers
- Tape
- Wall or board where you can tape operation directions
Not a club leader yet? Let's fix that!
Only registered math clubs can access this activity. Fortunately, for you, the National Math Club is completely free and open to both
schools and non-school groups. If you're a volunteer or educator leading 4 or more students in grades 6-8, you're likely eligible.
Learn more at the links below:
General Program Info | Program Rules & FAQ | MATHCOUNTS for Educators Resources