Observed arrival · 2026-10-01
Thought Gardens’ offline arithmetic activities
A free set of interactive addition and subtraction gardens for exploring numbers up to 30.
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●Pro
◎Niche
◉Human
⚑Risk
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- For
- Families and educators supporting early arithmetic
- Worth noticing
- The makers say the garden code makes no third-party requests and stores no answers or progress; phone file previewers may not run the offline activity.
Field notes
Questions generate within the chosen number range, and learners can switch between selecting and typing answers. The addition garden suggests counting groups, hopping forward, or building a ten; the subtraction garden uses counters, counting back, or finding the gap. The page links to review packages containing Markdown guides, test results, and integrity manifests, and notes that local-file support can vary on phones and tablets.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue