Observed arrival · 2026-10-07
With Every Reason: Arithmetic, with the rules explained
A six-year arithmetic course for children, with separate student books and parent or teacher guides from counting through proportion.
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- Parents and teachers teaching elementary arithmetic
- Worth noticing
- The Grade 5 and 6 solutions work every problem two ways and include a check.
Field notes
The guides divide the material into Whole Numbers (Part 0 and Chapters 1–7), Factors and Fractions (Chapters 8–21), and Decimals and Proportion (Chapters 22–30). The printable card sheet supplies ten-frames, hundred cards, digit cards and play money; the site also links a materials list for preparing lessons. Its corrections page currently reports none and says future entries will identify the book, printing and page.
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One card from the complete issue