How to Make Soap Out of Guava Leaf Extract for a Science Investigatory Project
Unless you're a high-schooler building a nuclear fusion reactor, the hardest part of a science investigatory project often is coming up with a good idea. You want it to be cool yet feasible, novel but still useful.

That's why Ai-ni Bautista's science project on making liquid soap infused with guava leaf extract is so perfect — it's fun, easy, and fresh with a very practical outcome. This d...

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