This file contains over 100 links with screen shots (organized by categories) of some of my favorite nrich interactivities. They are great as bell ringers, brain teasers, review and enrichment.
The nrich.maths.org website is a huge collection of rich math problems and interactive activities designed to provoke true mathematical thinking: exploring, noticing, discussing, conjecturing, explaining, generalizing, convincing and proving. The online interactivities can be used in a whole class setting, in small groups, individually in a computer lab, or at home for those students who have internet access. Many of the activities are printable and copyable for use offline.
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I’ve also developed lab sheets for some of the interactivities to guide students’ exploration and to keep them focused and accountable. Check ‘em out at my TpT store.
The nrich.maths.org website requires flash and requires a browser like Photon to run on ipads and android tablets.