Skip to product information
1 of 4
Thames & Kosmos

Thames & Kosmos Ooze Labs Big Box of Science Kit Ages 6+

Thames & Kosmos Ooze Labs Big Box of Science Kit Ages 6+

Regular price $24.99
Regular price Sale price $24.99
Sale Sold out
Shipping calculated at checkout.
Best For
Ages 6 and up
Young scientists and chemistry enthusiasts
Hands-on experiments and messy lab play
Availability: In Stock
Free Shipping on orders $49 and up*
*Offer applies to standard shipping to one location in the contiguous U.S. A $20 shipping surcharge per item applies to customers living outside the contiguous United States: Hawaii, Alaska. Additional surcharges may apply to oversized or bulky items.< Eligible for return on ToysRUs.com only.
View full details
Product Overview

The Thames & Kosmos Ooze Labs Big Box of Science packages five standout experiments into one chemistry starter set, complete with five sturdy plastic test tubes and a rack to organize them. Kids ages 6 and up can mix snow powder that expands to hundreds of times its original size, create oobleck that acts like a solid under pressure but flows like liquid when left alone, grow a crystal feather with fast-forming solution, make glow-in-the-dark slime, and watch color-changing thermocolor slime react to temperature. Each experiment demonstrates real chemistry concepts like polymers, supersaturation, and non-Newtonian fluids, turning curious kitchen scientists into hands-on learners who can see (and squish) the science as it happens.

  • Five different experiments explore snow powder expansion, oobleck viscosity, crystal growth, glow-in-the-dark reactions, and temperature-sensitive color changes
  • Test tubes and rack set up a real lab feel while keeping materials organized between experiments
  • All included chemicals are safe and non-toxic, though adult supervision helps guide the scientific process and explain the chemistry at work
  • Teaches STEM principles including states of matter, chemical reactions, and material properties through tactile, visual results kids can observe immediately
WARNING:
CHOKING HAZARD
Small parts. Not for children under 3 years.

See Full Details

Liquid error (sections/tru-pdp-experiences line 92): invalid url input
Liquid error (snippets/tru-experience-item line 2): invalid url input
Liquid error (snippets/tru-experience-item line 2): invalid url input
Liquid error (snippets/tru-experience-item line 2): invalid url input
Liquid error (sections/tru-pdp-callouts line 116): invalid url input Liquid error (sections/tru-pdp-callouts line 117): invalid url input
Liquid error (sections/tru-pdp-callouts line 123): invalid url input Liquid error (sections/tru-pdp-callouts line 124): invalid url input
Liquid error (sections/tru-pdp-banner line 69): invalid url input Liquid error (sections/tru-pdp-banner line 70): invalid url input
Full Details

Care Notes

  • cleaning: Wash plastic test tubes and rack with warm soapy water after each experiment and dry thoroughly before storage.
  • storage: Store unused experiment materials in a cool, dry place away from direct sunlight to preserve chemical effectiveness.
  • material warnings: Experiments should be conducted on protected surfaces as some materials may stain. Adult supervision required for children under 8.

Use Cases

  • Rainy day science activity for elementary school children
  • Birthday gift for a child interested in chemistry and experiments
  • Homeschool hands-on science curriculum supplement
  • After-school STEM enrichment at home
  • Sibling activity for children ages 6 to 10
  • Summer break educational entertainment
  • Introduction to chemistry concepts before middle school

Skills Developed

  • primary skill: Scientific observation and hypothesis testing
  • fine motor: Precise measuring and pouring of liquids and powders into test tubes
  • following instructions: Reading and executing multi-step experimental procedures in sequence
  • critical thinking: Understanding cause and effect relationships in chemical reactions

Age Suitability

  • minimum safe age: 6 years
  • ideal age range: 6-10 years
  • developmental fit: 5-7 years: Provides exciting sensory experiences with chemical reactions while building early scientific observation skills with adult guidance. 8-10 years: Supports independent experimentation and deeper understanding of scientific principles like states of matter and chemical properties.
  • upper age note: Children over 11 may find the experiments too basic unless they have no prior chemistry experience.

Play Patterns

  • primary play type: Structured scientific experimentation
  • play structure: Sequential experiments with clear beginning, middle, and end for each activity
  • social context: Works well for solo exploration or collaborative experimentation with siblings or friends
  • adult involvement: Required for children 6 to 7, recommended supervision for ages 8 to 10 during mixing and handling materials
  • play progression: Children typically complete one experiment per session, then move to the next experiment in subsequent play sessions
  • session length: Each individual experiment takes 15 to 30 minutes from setup through observation and cleanup

Why It Works

  • primary benefit: Hands-on experimentation with visible, dramatic results builds concrete understanding of abstract chemistry concepts that children can see and touch.
  • secondary benefit: Multiple short experiments maintain engagement and allow children to experience success quickly, building confidence in scientific exploration.

What Makes It Fun

  • Five big test tubes and a real rack turn any kitchen into a bubbling chemistry lab. Kids mix, ooze, and experiment like actual scientists.

Why They'll Love It

  • * Five chemistry experiments with instant snow and slime * Test tubes and rack for real lab setup at home * Glow slime and color-changing ooze reactions
Customer Q&A

What age is this science kit designed for?

This kit is designed for children ages 6 and up.

What experiments are included in this kit?

The kit includes instant snow powder that expands hundreds of times its size, oobleck that acts like quicksand, crystal growing, glow-in-the-dark slime, and thermocolor slime experiments.

Does this kit include lab equipment?

Yes, it includes 5 large sturdy plastic test tubes and a test tube rack.

Can children do these experiments independently?

Children ages 6 and 7 will need adult supervision and assistance, while children 8 and older can complete most experiments with minimal guidance.

Are the experiments reusable or one-time use?

Most experiments are one-time use as they consume the included materials, though the test tubes and rack can be reused for future science activities.

What scientific concepts does this kit teach?

The kit teaches polymer chemistry, crystal formation, non-Newtonian fluids, chemical reactions, and states of matter through hands-on experiments.