color-codeReading the Resistor Color Code Without Memorizing
How to read 4-band 5% and 5-band 1% resistor color codes the way Mr Circuit Lab 1101 and Lab 1201 teach it...
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Teaching notes, project walkthroughs, and hands-on electronics guides from Gary and the Mr Circuit team.
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Updated Apr 25, 2026
curriculumOhm's Law in One Class Period: A Teacher's Walkthrough
Ohm's Law, series, parallel, LED voltage drops, and picking the right resistor — taught the way Lab 1201 sequences it, in a...
classroomWhy Mr Circuit Labs Replace 'Photo-Op' Electronics Kits
Most STEM electronics kits look great on a brochure and teach almost nothing. Here is what 'Photo-Op labs' get wrong, and what...