Science Refill Center for FOSS and Delta Science Products

Shop for original FOSS and Delta Science refills and equipment. Keep your kits in like-new condition with materials guaranteed to work with your modules.

Looking to order Live Materials? Redeem your Living Materials Cards here.

Please note, FOSS 2nd Edition products are no longer available for purchase.

Attention: FOSS 3rd Edition Users

FOSS 3rd Edition kits, replacement parts and print materials will only be available until December 31, 2025. School Specialty will no longer sell or support FOSS 3E products after that date. Digital access and support for FOSS 3E that is currently available on ThinkLink will end December 31, 2026. We encourage you to replenish your inventory now while supplies last. Contact Us Today to order your 3rd Edition products or speak to a FOSS Specialist about conversion options.

Select your program edition and module to quickly add replacement items to your order. Find Your Edition

Find Your Edition


Use the Teacher Guide or Investigation Guide images below to determine which edition of FOSS® or Delta Science Modules you are using.


FOSS Elementary Programs

FOSS Next Generation
FOSS Next Generation logo in the bottom left corner of spiral-bound Investigations Guide

FOSS Third Edition
Full Option Science System logo in the bottom left corner of spiral-bound Investigations Guide

FOSS Middle School Program

FOSS Middle School
Second Edition
Purple Full Option Science System logo in the bottom left corner of the spiral-bound Investigations Guide


Choose Your Refill

DOWNLOAD PARTS LISTS

Available for Current Editions
Download replacement parts lists in PDF or Excel format.

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