The next
practice structure that I'd like to share is Slap It! This is a variation
of Slap Jack. This activity works best for practicing skills where there
are a limited number of responses. I've created a version for identifying
the center and radius of a circle from an equation and a version for
identifying the sine, cosine, and tangent of angles. I think this would
also be a good way to practice evaluating simple logarithms or specific values
on the unit circle. I'd love to hear what you would do with this idea.
Please share any variations that you try.

Here are the
rules for Slap Jack provided by Bicycle Cards :

Object of the
Game: The goal is to win all the cards,
by being first to slap each jack as it is played to the center.

The Deal: Deal cards one at a time face down,
to each player until all the cards have been dealt. The hands do not have to
come out even. Without looking at any of the cards, each player squares up his
hand into a neat pile in front of them.

The Play: Beginning on the dealer’s left,
each player lifts one card at a time from their pile and places it face up in
the center of the table.

When the card played to the center is a jack, the fun
begins! The first player to slap their hand down on the jack takes it, as well
as all the cards beneath it. The player winning these cards turns them face
down, places them under their pile of cards, and shuffles them to form a new,
larger pile.

When more than one player slaps at a jack, the one whose
hand is directly on top of the jack wins the pile. If a player slaps at any
card in the center that is not a jack, they must give one card, face down, to
the player of that card. When a player has no more cards left, they remain in
the game until the next jack is turned. The player may slap at the jack in an
effort to get a new pile. If the player fails to win that next pile, they are
out of the game.

The only changes that I have made is that I’m using a
TARGET card instead of a jack. Also, I’m
changing the TARGET card for each hand.
I’ll do this by using a hand-made spinner to determine the TARGET
characteristic for each round.

Here is my version for identifying the center and radius
of a circle from its equation.

Here is my version for identifying the sine, cosine, and
tangent of an angle.