Learning & Education
National Geographic Gross Science Kit - 45 Gross Science Experiments- Dissect a Brain, Make Slime, Creepy STEM Project for Boys and Girls, Birthday Gifts for Kids 8-12 (Amazon Exclusive)
A playful STEM kit from Blue Marble and National Geographic that bundles 15 ready experiments plus a 30-experiment bonus guide. Great for gross-and-curious kids aged ~8–12 who like hands-on chemistry and biology.
97.5
GiftScore
How the GiftScore is calculated
| Signal | Reading | Pts |
|---|---|---|
| Base rating | 4.7★ | +94.0 / 100 |
| Review volume confidence | Mass-market crowd signal | +2.0 (min -2) |
| Critical owner-feedback signal | No clear signal | +0.0 (min -2) |
| GiftScore Build & Materials | 80/100 | +1.2 (min -3) |
| GiftScore Safety Signals | 75/100 | +1.0 (min -4) |
| GiftScore Long-term Durability | 78/100 | +1.1 (min -3) |
| Final GiftScore | 97.5 | |
Base rating is an estimated baseline from the owner feedback we have available across Amazon reviews and any credible web sources we reviewed. GiftScore editorial signals (build, safety, longevity) are scored independently of that baseline — they reflect what owner feedback and product specs actually say about the product. Some signals are skipped when they don't fit the product type.