Usually when I think of building number sense, I think about primary math education. I know, though, number sense is something we all must work on all the time! So I did some Internet research to find resources and ideas for middle and high school.

- Knowing how precisely a high school freshman can estimate the number of objects in a group gives you a good idea how well he has done in math as far back as kindergarten, researchers at The Johns Hopkins University found. This Science Daily article is quite interesting.
- One of my first “hits” in my search revealed this book, Building Powerful Numeracy for Middle and High School Students written by Harris, published by Heinemann. The Heinemann website has a brief description. I plan to put this book on my summer reading list!
- If you are looking for number sense strategies and tricks, this website looks awesome!
- The state of Texas has a well-developed academic competition developed by the University of Texas – one of which is number sense. Practice tests are available online here.
- NCTM has published several number sense tasks – with explanation in their Reasoning and Sense Making Task Library
- The state of Washington has posted sample number sense writing prompts for all grade levels.
- San Diego school system has posted ideas for number sense routines.
- University of California also published a workbook on number sense.
- Minnesota has published an interesting paper showing the progession of number sense through primary years to high school.

I enjoyed this research … now … how shall I build the recommendations and examples into my daily practice? My students would definitely benefit! I’ve read on other math blogs about daily routine warm-up activities. I’m wondering if I might be able to restructure our warm-up activities to include a number sense routine as well as spiral review and introduction to the day’s lesson.

I look forward to hearing about what others do to build number sense!

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Wow! What a great list of resources! Thanks!

You are welcome! I love to research … love having so much information at my fingertips!

By the way – love your focus on a topic weekly … it inspires my research and helps me in my work!

I second it! Delving into a couple of tasks I discovered a few GeoGebra applets. Way cool!

Thank you for stopping by … I’m new to GeoGebra … hoping to explore it soon!

Thanks for taking the time to look for these resources. Looks like I’ll be able to add a few links for my parents and students.

Thank you for stopping by! And yes! There are resources for parents. Great idea to share the resources with them!