Invisible Ink

Invisible Ink Lesson Video

Lesson Plan:

*You can use the document in the link below to either: tailor the experiment to your needs or to have a printable version of this lesson plan*

Google Doc of Invisible Ink Lesson Plan

The plan is editable and printable. Copy the Google Doc in your own drive and make edits or you can just print.


Students will be experiencing how to make invisible ink using sunlight and lemon juice. By doing this experiment, they will only need three supplies. Super easy and super cool for any student!

Learning Objectives:

By the end of this experiment, students will be able to:

  1. Students will be able to observe how lemon juice can make ink using sunlight.
  2. Students will be able to see how impactful sunlight is.

Alignment with NGSS (Next Generation Science Standards)

MS-PS1-2.Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-ETS 1-2.Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.


STEAM Subjects: 


Science Vocabulary: 

Energy, Heat


20-30 min


  • Lemon Juice
  • Paint Brush/ Q-tip
  • Paper
  • Tupperware/ bowl
  • Direct sunlight

Special Thank You to Our Funding From:

CSUCI Faculty MiniGrant Program