The Online Teacher Resource
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| Brain Teaser Version 1 | Brain Teaser Version 2 |
| Mostly on dates and common numbers. | Requires street smarts and mixed math logic. |
| Brain Teaser Version 3 | Brain Teaser Version 4 |
| Fun riddle riddle based questions. | Students use their brain to solve everyday scenarios. |
| Brain Teaser Version 5 | Brain Teaser Version 6 |
| Students might actually come across these problems in everyday life. | These questions make you think fast. |
| Version 1-6 Answer Key | |
| Brain Teaser Version 7 | Brain Teaser Version 8 |
| Challenge yourself with real-world problems. | Longer problems that require you to piece things together. |
| Brain Teaser Version 9 | Brain Teaser Version 10 |
| These problems include a great deal of measurement skills. | Your average 4th grader would tackle these problems every day. |
| Brain Teaser Version 11 | Brain Teaser Version 12 |
| What a unique mixed of questions these are. | Talk about your random problems that you sometimes forget how to do. |
| Version 7- 12 Answer Key |
| Brain Teaser Version 13 | Brain Teaser Version 14 |
| Directional and money based problems. | Buying food and getting ready for the party. |
| Brain Teaser Version 15 | Brain Teaser Version 16 |
| Lots of averages are found in this set. | Some slightly harder problems that twist you up. |
| Brain Teaser Version 17 | Brain Teaser Version 18 |
| Distance, money, and time based problems. | These problems focus on whole numbers. |
| Brain Teasers Workbook | Version 13- 18 Answer Key |
| These brain teasers have students think of items identified on each worksheet. There are 30 different worksheets with a different brain teaser. |