Spot It
Legend
Interactive
Video
Making 3 object cards: Construct your own 3-object deck
Stretching Monsters: Help two monsters stretch out and relax
Rational slopes on video game screens: Interactive that explores how many times lines leave the right and the top of the screen before returning to the origin
Irrational doesn't mean everything!: Looks like it fills the screen, but actually not!
Double Hits!: Interactive that explores what happens to a grid that isn't made up of a prime side
What is Spot It?: Explains Spot It. Constructs a 2-object deck.
Cards as Lines: Seeing cards as lines, and getting distracted by what lines are.
Parallel Lines: Adding an extra point to every line for the slope, and now all lines cross!
Wait a Minute, that's Irrational!: Noticing that irrational slopes look like they fill the screen
Missing Almost Everything!: Making sense of irrational slope
Back to the 80s: Making sense of the '80s and discrete slope
Spot It Cards: What all this has to do with Spot It
Duality: Spot It card counting
Donuts:
Stretching you mind to see a donut and eventually looking right out of an infinite forest!

Age Range:
10+, younger audiences will move slower, and won't get everything but the arguments and concepts are beautiful and well worth exposing to everyone!

Mathematics:
Elementary topology, rational and irrational numbers, including decimal expansions, using lines to generate rational approximations, and a brush with infinity

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Finite Forests:
Navigating a forest with and without bumping into trees, and what this tells us about Spot It!

Age Range:
11+ a very accessible introduction to modular arithmetic and finite geometry

Mathematics:
Subtleties of counting, modular (or clock) arithmetic, lines using modular arthmetic (a brush with projective space)

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Spot It: Experimentation:
Play Spot It. Simplify the game. Try making a deck of 2-object or a deck of 3-object cards. Culminates in a curious observation about lines

Age Range:
5+, everyone will enjoy these activities

Mathematics:
Exploring with Trial and Error. Simplifying and altering questions as a mode of inquiry. Causality

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Straight Lines:
What is a line? What does parallel mean? And how to describe a line mathematically

Age Range:
7+, younger audiences might need more guidance, and second half (describing the equation for a line) is more suitable for 11+

Mathematics:
Lines, parallel lines, lines in 2D and 3D, and the equation for a line

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