Let your students play this great game online at Ghost Whisperer Crystal Ball and
- Figure out why it works.
- Construct viable arguments
- Critique the work of others
This activity can be used with any grade level elementary through high school. Younger students might work with patterns, multiples and order of operations. Older students might work with systems of equations to prove how the Ghost Whisperer works. The lesson was contributed by Joe Donahue who teaches at Santa Ynez School in Santa Ynez, CA and was inspired by a workshop given by Dr. Patrick Callahan.
The activity sheet: Ghost-Whisperer.pdf
For members we have an editable Word doc, solutions, and teaching suggestions:
CCSS: 4.OA.4, 5.OA.1, HSA.CED.A.2, MP.1, MP.3, MP.4, MP.7, MP.8
.@Yummymath My students loved the "ghost whisperer problem," as in wouldn't-leave-even-after-bell-rang loved it.
— Robin Hosemann (@robinhosemann) February 25, 2014
— Nathaniel Highstein (@nhighstein) March 30, 2014
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