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Operation Espionage

WGBH
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In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice. The...

$1 - $5 per group Ages 6 - 11 45 to 60 minutes

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Chemical
- sodium bicarbonate (remove)
Informal Category
- Historical Reenactment (remove)
- Arts and Crafts (remove)
Materials Cost
- $1 - $5 (remove)
Age Range
- 8-11 years old (grades 3-5) (remove)
Learning Time
- 45 to 60 minutes (remove)