Made in USA — San Luis Obispo, CaliforniaShips Same DayShips Same DayPurchase Orders Accepted1,000s of Kits in Classrooms NationwideDigital Lab Access Included

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Reusable, no-soldering electronics kits with a complete printed curriculum and free digital platform access. Every kit works with the same 9V power supply.

1,000+ classrooms equipped

6 products in the lineup

~$2 per student / year

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1634 products

Classroom Flagship Most Popular

MC1-SET Classroom Set of 32 unique REUSABLE solderless experiment kits exclusively from MR CIRCUIT.

MC1-SET · Classroom System

The complete Lab 1 curriculum
in one order.

32 unique, individually-bagged reusable experiment kits — MC1-00 through MC1-31 — with the full printed manual, free digital platform access, and everything a class needs to build real circuits from day one.

32 experiment kits 34 lesson plans included No soldering Free digital platform Reusable year after year

$164· ~$2/student/year

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Individual Labs

1633 products

5.1k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 5.1k Ohm 5% Carbon Film Resistors - (Pack of 5)

5.6 Meg Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 5.6 Meg Ohm 5% Carbon Film Resistors - (Pack of 5)

5.6 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 5.6 Ohm 5% Carbon Film Resistors - (Pack of 5)

5.6k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 5.6k Ohm 5% Carbon Film Resistors - (Pack of 5)

51 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 51 Ohm 5% Carbon Film Resistors - (Pack of 5)

510 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 510 Ohm 5% Carbon Film Resistors - (Pack of 5)

510k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 510k Ohm 5% Carbon Film Resistors - (Pack of 5)

51k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 51k Ohm 5% Carbon Film Resistors - (Pack of 5)

56 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 56 Ohm 5% Carbon Film Resistors - (Pack of 5)

560 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 560 Ohm 5% Carbon Film Resistors - (Pack of 5)

560k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 560k Ohm 5% Carbon Film Resistors - (Pack of 5)

56k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 56k Ohm 5% Carbon Film Resistors - (Pack of 5)

6.8k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 6.8k Ohm 5% Carbon Film Resistors - (Pack of 5)

68 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 68 Ohm 5% Carbon Film Resistors - (Pack of 5)

680 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 680 Ohm 5% Carbon Film Resistors - (Pack of 5)

680k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 680k Ohm 5% Carbon Film Resistors - (Pack of 5)

68k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 68k Ohm 5% Carbon Film Resistors - (Pack of 5)

7.5 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 7.5 Ohm 5% Carbon Film Resistors - (Pack of 5)

7.5k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 7.5k Ohm 5% Carbon Film Resistors - (Pack of 5)

75 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 75 Ohm 5% Carbon Film Resistors - (Pack of 5)

750k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 750k Ohm 5% Carbon Film Resistors - (Pack of 5)

75k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 75k Ohm 5% Carbon Film Resistors - (Pack of 5)

8.2 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 8.2 Ohm 5% Carbon Film Resistors - (Pack of 5)

8.2k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 8.2k Ohm 5% Carbon Film Resistors - (Pack of 5)

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