Hi this is my first version of education laboratory for kids.

there is some passives and transistors + 555, NAND gates, 7 segment display, RGB led

and finally small geared motor,

Cool features:

• For connection use female to female wires
• Every group have access to + - or another shortcut to use just Jumper ... check on picture, it can reduce wires and simplify circuits

BOM = Components

Resistors

• 2x 100k
• 2x 10k
• 2x 1k
• 2x 100R
• 1x Variable resistor 100k

Diodes

• 1x 1N4148

Inductors

• 2x 1mH

Capacitors

• 2x 100uF
• 2x 10uF
• 2x 100nF
• 2x 10nF
• 1x 1nF

Photodiode aka solar cell

• 2x BPW32 = 1V

Transistors

• 2x NPN
• 1x PNP
• 1x SCR

IC

• 555
• 7400

Sound

• Piezo speaker
• Piezo beeper

LED

• 1x RGB
• 2x RED
• 1x Blue self flashing
• 1x bipolar dual color
• 1x 7-segment display

Switch

• 3x push button
• 1x side switch for power supply
• 2x side switch for motor direction

Test video with LED flasher

Schematic: