In the image above, it shows a guide to give your students some idea of what you expect and how they could go about this activity. I recommend giving your students a guide for the first few times doing this just to help them get the idea of the activity. You could use post-it notes (like in the image) if you wanted to do a group effort page to begin with, and then get students to place them on a page to share their ideas. You could also just get students to split the page into four sections around the number in the middle if you prefer to keep it independent work.
Allocate four 'guidelines' you want students to follow when making the number. For example:
1 - Use operations to make 25 (add, subtract, multiply or divide)
2 - Include decimals or fractions (or make it a challenger box appropriate for your grade level)
3 - Draw it
4 - Make word problems
Now I expect at least one thing done for every box from all of my students, but the point of the activity is to push them to make 25 in as many ways as possible in a set time frame (I give my students 10 minutes). Once the ten minutes is up, I invite students to share one of their ideas with the rest of the class. I encourage and praise ways that seem super creative and stand out from the flock.
All students I have done this with start to love it once they get the hang of it. In fact, it almost always seemed to give several students a sense of competitiveness as they tried to get the most problems down on their page and come up with the most creative ways. You will be amazed how some students may grow in their way of approaching the task every time it is done.
After a few times with the guidelines, I then no longer have to tell my students to do the four sections. Instead, I give them complete free open range and challenge them to come up with the most interesting ways to make the number! I get them to simply set up a page in their workbook as in the image below, give the number, set the timer and off they go. I always state that I expect to see the page looking full just to nudge on the few that need it. When it comes to reflection time (we only spend a few minutes on this), I encourage students to share their most creative idea to make the number. The encouragement and sharing (I found) helped those few students who were stuck on only ever doing the simple stuff like 99 + 1, 98 + 2, to move on to trying to think of other ways to do it.
It really is a simple and straightforward activity, that can also be a great 5-10 minute filler if you have a gap in math time. Every class I have done this with, despite their grade level, actually end up enjoying this math activity. It is something every student can attempt, the answer is always right as long as the answer is the given number. Better yet, their brains get a good warm up as you transition on to the main part of your math lesson.
PLUS . . . if you ever find you need a few more minutes to prepare for an upcoming lesson this also is a great yet meaningful emergency activity to do while you get your stuff sorted out.
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A 21st century School Teacher, Mother, and Wife.
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