*Object:*

To get as many points as possible by hitting as many boats as possible

*Set-Up:*

The game board shows the first quadrant of a coordinate grid, where each player’s boat travels along the *y*-axis. On the grid, there are three types of boats: boats, bonus boats, and bombs. There will always be a set number of each boat available on the game board for every new turn. The following are displayed under each player’s name: the number of cannonballs (or turns) remaining, the unused bonus lines, the history of linear equations played, and the total points earned.

*Play:*

Students will spin to generate a fixed value for the slope or *y*-intercept. Students will have a total of 1 minute 30 seconds to complete the equation if they are playing against a partner. (There is no timer if you play against the computer.) A timer will appear for the last 30 seconds. Once the equation has been defined, press the Fire button. If a free spin token is available for use, simply click on the icon, and the equation will change. One of five total cannonballs will then be shot from your boat’s defined position to collect the boats located on the line of fire.

When you hit a bonus boat, you earn bonus points and a bonus line! There are five types of bonus lines—parallel, perpendicular, translation, reflection, and rotation—that can be generated, depending on the type of bonus boat you hit. Use the information button on the game board to identify these boats and their respective values.

Once a bonus boat is activated, a pop-up window will appear. Use the information button to read definitions and hints. Use the up and down arrow keys to complete the equation. Although values can be typed in, invalid entries will either be rounded or be replaced with a max/min value. The bonus line you create *must* be in relation to the line that is currently highlighted on the screen.

Your turn ends when you run out of bonus lines to define and press “End Turn”.

*Winning the Game:*

The player who has the most points at the end of five turns wins.