- 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!