Curated OER
Ink
Here is an interesting lesson plan that has learners make ink from two common food items. First, they make ink from beets, then they make ink from onions. The recipes necessary for each are present in the plan. The special thing about...
Curated OER
Revolutionary War Spy Methods
Young scholars research how coded messages were used during the Revolutionary War. In this Revolutionary War activity, students view primary documents about the Revolutionary War spies and the methods used for sending messages. Young...
Curated OER
How to Make Invisible Ink
Students learn how to make two types of invisible ink. In this invisible ink lesson plan, students will make two types of invisible ink using common house hold items. They will then write a paper comparing and contrasting each type of ink.
Curated OER
Invisible Ink - Demonstration
Students observe a demonstration that shows that the indicator, phenolphthalein, is a chemical that displays different colors depending on either the acidity or the basicity of the environment. They use the substance to reveal secret...
TeachEngineering
Teach Engineering: Basically Acids
Students learn the basics of acid/base chemistry in a fun, interactive way by studying instances of acid/base chemistry found in popular films such as Harry Potter and the Prisoner of Azkaban and National Treasure. Students learn what...
![Maryland Science Center: One Ring to Rule Them All [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Maryland Science Center: One Ring to Rule Them All [Pdf] Activity")
Maryland Science Center
Maryland Science Center: One Ring to Rule Them All [Pdf]
A simple experiment to create a secret message using invisible ink, in honor of J.R.R. Tolkien's birthday and the Ring in The Lord of the Rings.