This product contains a PowerPoint with 31 slides. The first slide has 30 question marks.
When a question mark is clicked, it goes to a random graph. Students examine the graph and decide if the graph is a function or not.
After discussing, they can click on the blue “Answer” button and the graph will be identified as a “function” or “not a function”. If the answer is “not a function”, a straight vertical line will also pass down through the graph, indicating why it is not a function.
When the answer is revealed, click the “back to questions” button to return to the question marks slide. When a question is done and you return to the first slide, the question mark symbol for that question disappears, until all question marks are gone.
I generally allow students to approach the board and click on a random question themselves. This PowerPoint is a visually powerful method to use the vertical line test to describe a graph as a function or not.
Answers are automatically in the PowerPoint, and also provided in a PDF document.
These questions are also available in a printed format and can be found under:
A bundle with both the print version and PowerPoint game version can be found under:
I hope you find this product very useful and it helps your students learn as it has done mine, as well as lowering your workload. Please check out the product's pictures and preview to get a better idea of the format and layout of the product. If there are any questions, please feel free to send me a message, and I'll reply as soon as I possibly can.
This product purchase is for single teacher use only, and may not be shared among teaching colleagues, either in your own school workplace or other teachers in different schools or districts. One must purchase the appropriate number of licenses in order to do so. It is also not allowed to display the material in this product on any other website without the express permission of the author.