Curated OER
Ink
Here is an interesting lesson 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 the ink...
Curated OER
Revolutionary War Spy Methods
Students research how coded messages were used during the Revolutionary War. For this Revolutionary War lesson, students view primary documents about the Revolutionary War spies and the methods used for sending messages. Students write a...
Curated OER
How to Make Invisible Ink
Learners 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
Learners 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...