Experimenting: Factors that Affect Sponge Egg Hatching

Catalog #STO-124

Design and conduct a controlled experiment.

Time To Complete Time to complete: Four 40-minute periods
  • Conduct a controlled experiment to determine the effect of temperature on the hatching of sponge eggs.
  • Design and conduct your own controlled experiment to test the claim that using "HatchFast" speeds up sponge egg hatching.
Teacher Guide Know Before You Buy! Download Teacher Guide

Limit 1 free sample per customer

Quantity Price
1 - 9$15.14 ea.
10 - 24$14.38 ea.
25 - 1000$13.63 ea.

Each assembled kit contains:

  • Student instructions
  • 18 “sponge eggs” (gel capsules containing sponge “eggs”)
  • 3 labeled plastic cups
  • 4 stirrers
  • 1 Celsius thermometer
  • 1 bag of HatchFast
  • 1 small spoon

Also required: Water at 25, 35, and 45 degrees Celsius, clock with a second hand, safety goggles

Buy Unassembled and Save!

Refill Your Kit

Experimenting: Factors that Affect Sponge Egg Hatching – Pack of 10 Unassembled Kits

Catalog # STO-124U

Unassembled packs contain materials for 10 kits.

  • All supplies, lab materials, and printed labels
  • Student instructions copy master
  • Easy to follow instructions for kit assembly
Quantity Price
1 - 9$118.97 ea.
10 - 1000$113.02 ea.

Experimenting: Factors that Affect Sponge Egg Hatching – 10 Kit Refill Pack

Catalog # STO-124R

Refill packs contain materials to replace consumable supplies for 10 kits.

Quantity Price
1 - 9$50.83 ea.
10 - 1000$48.29 ea.

Teacher Testimonial

You have done a very good thing for teachers.  The prices are very reasonable and the kits are easy to follow.  Thank you.

- High School biology teacher (NY)

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STO-124