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Printable STEM activities, worksheets and games, designed by an engineer and print-tested by her two kids. Pay, download, print.

Most popular first.

• Marshmallow Geometry Cards Printable STEM challenge $2.99 8 pages
• Popsicle Stick Catapult Printable STEM challenge $3.50 27 pages
• Egg Drop Challenge Printable STEM worksheets $3.50 11 pages
• Seed Germination Experiment Printable science worksheets $3.00 10 pages

Getting ready for the school year

Letters, numbers and name practice for the first few weeks back.

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How this works

• Pay by card or Apple Pay. Nothing to install, no account to make.
• Your download link is emailed immediately.
• Everything prints on US Letter and A4, on a normal home printer.
• Print as many copies as you like for your own family or classroom.

About Mombrite

I’m Betty, a former engineer and current homeschool mom, and I create every printable here. Every printable is tested with children before release, sized for standard home printers, and built around materials most families already have.

Questions before you buy? Send me a message – it comes straight to me.

Mombrite printables cover hands-on STEM challenges, science experiment worksheets, coloring pages, Montessori three-part cards, and holiday activity games for children roughly aged 3 to 12. Every file is a printable PDF sized for US Letter and A4, delivered by email as soon as you buy it, with an unlimited print license for your home or a single classroom. Packs are used by homeschooling families, elementary teachers, and parents looking for screen-free activities built from everyday household materials.