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Foreword.- 1. Visions of the Mathematical.- 2. Laying the Foundations.- 3. Tools and Technologies.- 4. Ratio World.- 5. Webs and Situated Abstractions.- 6. Beyond the Individual Learner.- 7. Cultures and Change.- 8. A Window on Teachers.- 9. A Window on Schools.- 10. Re-visioning Mathematical Meanings.- References.
A Wed, study studied this question.