Welcome
Welcome to Sparebrain Bazaar, a collection of free, high-quality educational tools and resources designed to support educators and learners across diverse disciplines.
This is a space where teaching, technology, and creativity intersect—offering practical solutions that help educators teach more effectively and students learn more deeply.
About the Project
With over 20 years of experience teaching at the graduate and professional level, and an equal amount of time building educational technology, Sparebrain projects are designed with one core principle: cost should never be a barrier to quality education.
The mission is simple: Create accessible, user-friendly tools that solve real problems for teachers and learners—and share them freely so everyone can benefit.
All resources here are built through hands-on work with students, trainees, and educators. Each tool is designed to help users understand complex ideas, think critically, and apply knowledge in meaningful ways.
Free Tools
These tools are free to use—no account, no paywall, no strings attached.
Generate customizable, printable arithmetic worksheets for students. Choose from addition, subtraction, multiplication, and division; set difficulty ranges; control problem count and layout; and toggle answers on or off. Designed for teachers, parents, and homeschoolers.
Open SumTodo →Support This Work
All tools here are free to use—no account required. If you've used one and found it helpful, you're welcome to leave a tip. It goes directly toward server costs and keeping everything free for everyone.
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Tips are voluntary thank-you payments for free tools you've already used. They help cover hosting and ongoing development costs. Payments are non-refundable. For questions, contact support@sparebrain.org.