8 Critical thinking home school resources
Updated August 23, 2026
This auction ended on September 1, 2026.
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| Lot number | 538 |
| Auction | Johnson Art & Antiques Online Auction |
| Date | September 1, 2026 at 6:30 PM EDT |
| Auction house | Harmeyer Auction & Appraisal Co. |
| Location | Rushville, Indiana |
Eight teaching resources to develop deductive reasoning skills and logical thinking, all published by MindWare, all unused: 1) Venn Perplexors, Level A (pre-K - grade 2). 2) Venn Perplexors, Level B (grades 3-6). 3) Venn Perplexors, Level C (grades 6-9). 4) Venn Perplexors, Level D (grades 9-12). 5) Grid Perplexors, Level A (grades 3 and 4). 6) Grid Perplexors, Level B (grades 4 and 5). 7) Grid Perplexors, Level C (grades 5 and 6). 8) Grid Perplexors, Level D (grades 7 and up).
