VanCleave's Science Fun

Your Guide to Science Projects, Fun Experiments, and Science Research

ABOUT THE SOUND PICTURE

With mouth wide open, vibrating air coming up the throat from the vocal chords leaving the open mouth and spreading in all directions. Hi, I am Janice VanCleave, author of 50+ best-selling science experiment books for children ages 4 through high school. I taught science for 27 years and now am creating this science website.   My scream was not staged. The picture was to be of two adult cats, which I was holding. A microsecond before the camera snapped, the two cats dug their claws into my skin as they prepared to leap out of my arms. A picture like this is great for making inferences. Kids could make "guesses" as to why I am screaming. They would be drawing on facts from the photo, such as I look like I am in pain or maybe I am just pretending.

Sound Supplies and Sound Investigations

Educational Innovation Sound Supplies A black and yellow logo for Educational Innovations. A place to find fun science supplies.
  • Home
  • ASK JANICE
  • Teacher Guide
  • Homeschool Science For Kids

Hidden Colors

By Janice VanCleave

Paper Chromatography Chromatography means to write with colors. Chromatography is a chemical process of separating mixtures of colorants. The first video below demonstrates the following Paper Chromatography procedure steps. The video also has a craft idea for making a butterfly using the colored paper filter.The second video below provides information about paper chromatography as well as more […]

Filed Under: Chemistry Tagged With: chromatography, colorants, mixture

Color Mixing:Colorants

By Janice VanCleave

What is a colorant? A colorant is something, especially a dye, pigment, ink, or paint, that colors  something else. For the following activity, colorant choices include, tempra paint, food coloring, and water soluble acrylic paints. What happens when colorants are mixed together? Any two or more colorants  can be mixed to form different colors. Only […]

Filed Under: Science Projects Tagged With: color mixtures, colorants, mixtures, solutions

Scientific Method: Color Changes

By Janice VanCleave

Research:  Paints contain materials called pigments or colorants. These materials produce colors by reflecting certain colors of light. The three primary colors for paints are Red, Blue, and Yellow. The mixing of any two of these colors produce what are called secondary colors. Red + Blue= Purple Red + Yellow = Orange Blue + Yellow […]

Filed Under: Science Projects Tagged With: colorants, primary colors

Topic Search

Visitors From All Over the World


Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

Introductory CAT Lesson

Science CAT Activity and SCI/Art  

SOON! More CAT Activities

Janice VanCleave CAT Stickers

Order Your CAT Stickers Here

FAQs

Janice VanCleave answers your questions about all the different kinds of color changing products.

Check here for Frequently Asked Questions about CAT
stickers.

Send Questions to Janice

Send Information to me using this form.

Contact Janice

Other Janice VanCleave Free Color Changing Lessons

  • HAT Stickers Heat Activated Thermochromic Stickers Stickers that change colors when heated.
  • SA Stickers Sun Activated Stickers Stickers that change color when exposed to sunlight.
  • TLC Dot Stickers Thermochromic Liquid Crystal Stickers Stickers that, like Mood Rings, change color when heated.

Copyright © 2026 · Janice Van Cleave · JVC's Science Fair Projects · Log in