Primary · Grade 2

Level 2: Electronics

Students snap together circuit modules and reason about how hardware logic makes a system work, alongside science-rich content.

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Level 2 at a glance

Grade: Grade 2 · Primary
Technology: Electronics
Tools: Snap circuit modules
Kit: Early Electronics Kit, one per group of four
Projects: 15 projects and a Capstone
Weekly time: One 45 or 90 minute session
Pre and post challenge: Design a Silent Doorbell
Sustainability theme: Infrastructure and Education Access
Careers named: Circuit Design Engineer, Sound Engineer, Laser Technician

Level 2 book demo

Book demo

See Level 2 in action

A short walk through the Level 2 workbook and the Early Electronics Kit, from the SKOOL21 channel.

Projects from the Early Electronics Kit

By the end of this level

Students can

Assemble working circuits from snap modules
Explain what each module does in a circuit
Predict and test how a change alters the result

Summarised from the SKOOL21 Level Exit Outcomes.

Design process

How they work

Define
Design
Share
Reflect

Sample projects

Fifteen projects and a Capstone. Ask for the level sheet for the full project list.

Full exit outcomes and Sustainable Development Goals for Level 2

Engineering & Design

Build a working electrical circuit (battery, wires, switch/button, LED) that solves a stated real-world problem (the "Design a Silent Doorbell" pre/post challenge).
Apply the define-build-test process specifically to circuit design, testing whether the circuit lights up on a button press.
Test and troubleshoot a circuit that does not work as intended through direct hands-on testing (14 of this level's 16 projects are purely engineering-design tasks).
Design an accessible/adaptive solution for a stated user need (e.g., a visual alert in place of an audio one).

Science

Describe and select the properties of matter used in a circuit build, such as conductive versus non-conductive materials (NGSS Physical Science — Matter, PS1).
Explain how a simple circuit produces light through an electrical connection (Cambridge Science Stage 2 Physics — Electricity, the level's dominant strand).
Apply Thinking & Working Scientifically skills to test and refine a circuit build (Cambridge Science Stage 2).
Connect a build to an Earth & Space or Chemistry topic encountered this level (Cambridge Science Stage 2).

Mathematics

Count and organize circuit components, and describe simple likelihood/probability ideas from repeated testing outcomes (Cambridge Primary Statistics incl. Probability).
Identify and use 2D/3D shapes and spatial layout when arranging circuit components (Cambridge Primary Geometry; Common Core Geometry).
Apply number operations to compare quantities, such as wire lengths or battery counts (Cambridge Primary Number; Common Core Number & Operations in Base Ten).
Apply a mathematical practice such as perseverance while troubleshooting a non-working circuit (Common Core Standards for Mathematical Practice).

Computing & Coding

Build and test a functioning electrical circuit with a trigger (switch/button) and an output (LED) — an electronics-based precursor to input-process-output logic.

Social skills

Take on and fulfill a defined team role — Leader, Material Manager, Reporter, or Testing Supervisor — while collaborating, communicating, and resolving conflict within a build team.

STEM career literacy

Recognize how this level’s builds connect to real electronics-engineering careers, such as Circuit Design Engineer, Sound Engineer, or Laser Technician.

Sustainability literacy

Identify the Sustainable Development Goal connected to their build, themed around Infrastructure & Education Access — and, at Capstone, choose their own goal.

From the SKOOL21 Level Exit Outcomes. Standards named are NGSS, Common Core and Cambridge strands.

Sustainable Development Goals at this level

2 Zero Hunger
3 Good Health and Well-being
4 Quality Education
7 Affordable and Clean Energy
9 Industry, Innovation and Infrastructure
11 Sustainable Cities and Communities
12 Responsible Consumption and Production
13 Climate Action

Source: SKOOL21 Five Pillars Framework. Compare all levels

Sample lesson

Project 1: Design an Electric Lamp

The first project of the level, as it appears in the guidebook. The full workbook is in the reader below where published.

Your friend wants an electric lamp to read at night. Your team will help your friend design an electric lamp.

The problem, as printed in the workbook.

Goal named: SDG 4 · Quality Education
Careers named: Electrical Engineer, Product Designer
Standards cited: NGSS K-2 Engineering Design; Cambridge Science 2Pe.01; Common Core 2.MD.C.7; Cambridge Mathematics 2Gt.02

Design an Electric Lamp, sample lesson page 1 — 1. Objectives and standards

Design an Electric Lamp, sample lesson page 2 — 2. The project begins

Design an Electric Lamp, sample lesson page 3 — 3. Planning the build

Design an Electric Lamp, sample lesson page 4 — 4. Building

Curriculum alignment

Standards cited in Level 2, project by project

One row per project, quoted as the guidebook cites them. An empty cell means no citation for that project.

NGSS sub-domains

PS1
ETS1

Distinct NGSS sub-domains touched (of 12): 2Projects with ≥ 1 NGSS code (of 16, incl. capstone): 16 / 16

Cambridge Science sub-strands

TWSc
TWSm
Cp
Pf
Pe
ESp

Distinct Stage-coded sub-strands touched (of 17): 6Projects with ≥ 1 Cambridge Science code (of 16, incl. capstone): 16 / 16

Cambridge Maths sub-strands

Distinct Stage-coded sub-strands touched (of 13): 9Projects with ≥ 1 Cambridge Math code (of 16, incl. capstone): 16 / 16

Project	SDG	NGSS	Cambridge Science	Cambridge Maths	Common Core Maths	ISTE	Careers named
1 Design an Electric Lamp	Quality Education	K-2-ETS1-1	2TWSc.022TWSc.04	2Gt.02	2.MD.C.7	1.3.d.1.4.c.1.7.c.	Electrical Engineer, Product Designer
2 Design a Switch	Responsible Consumption and Production	2-PS1-22-PS1-1	2Cp.012Cp.022Cp.03	2Ss.012Ss.02	2.MD.D.92.MD.D.10	1.3.d.1.4.c.1.7.c.	Safety Engineer, Materials Scientist
3 Design a Doorbell	Industry, Innovation and Infrastructure	K-2-ETS1-1	2Pe.022Pe.03	2Gg.01	2.G.A.1	1.3.d.1.4.c.1.7.c.	Electrical Engineer, Civil Engineer
4 Design a Lodestone Detector	Quality Education	2-PS1-22-PS1-1	2Cp.032ESp.01	2Ss.012Ss.02	2.MD.D.92.MD.D.10	1.3.d.1.4.c.1.7.c.	Geologist, Materials Scientist
5 Design a Communicator	Industry, Innovation and Infrastructure	K-2-ETS1-1	2Pe.022TWSm.02	2Sp.01	MP6	1.3.d.1.4.c.1.7.c.	Communication Engineer, Marine Engineer
6 Design a Fan	Climate Action	K-2-ETS1-1	2Pe.032Pf.03	2Nf.01	2.G.A.3	1.3.d.1.4.c.1.7.c.	Mechanical Engineer, Electrical Engineer
7 Design a Circuit	Industry, Innovation and Infrastructure	K-2-ETS1-1	2Pe.022Pe.03	2Np.01	2.NBT.A.1	1.3.d.1.4.c.1.7.c.	Lighting Designer, Laser Technician
8 Design a Motion Detector	Zero Hunger	K-2-ETS1-1	2Pe.022Pe.03	2Gg.032Gg.04	2.MD.A.1	1.3.d.1.4.c.1.7.c.	Safety Engineer, Electrical Engineer
9 Design a Motion Alarm	Sustainable Cities and Communities	K-2-ETS1-1	2Pe.022Pe.03	2Np.03	2.NBT.A.4	1.3.d.1.4.c.1.7.c.	Security Technician, Electrical Engineer
10 Design a Light Show	Affordable and Clean Energy	K-2-ETS1-1	2Pe.022Pe.03	3Ni.04	2.NBT.B.7	1.3.d.1.4.c.1.7.c.	Electrical Engineer, Laser Technician
11 Design an Asteroid Game	Quality Education	K-2-ETS1-1	2Pe.022Pe.03	2Np.01	2.NBT.A.1	1.3.d.1.4.c.1.7.c.	Game Electronics Engineer, Electrical Engineer
12 Design a Birthday Surprise	Good Health and Well-being	K-2-ETS1-1	2Pe.022Pe.03	2Ni.01	2.NBT.A.3	1.3.d.1.4.c.1.7.c.	Circuit Design Engineer, Sound Engineer
13 Design a Night Light	Affordable and Clean Energy	K-2-ETS1-1	2Pe.022Pe.03	2Nc.052Ni.04	2.OA.C.4	1.3.d.1.4.c.1.7.c.	Sensor Systems Engineer, Electrical Engineer
14 Design an Electric Car	Sustainable Cities and Communities	K-2-ETS1-1	2Pe.022Pe.03	2Ss.01	2.OA.A.1	1.3.d.1.4.c.1.7.c.	Electric Vehicle Engineer, Electrical Engineer
15 Design a Highway	Industry, Innovation and Infrastructure	K-2-ETS1-1	2Pe.022Pe.03	TWM.01TWM.08	MP1	1.3.d.1.4.c.1.7.c.	Civil Engineer, Urban Planner
Capstone STEM Challenge	Choice of Goals (student-selected)	K-2-ETS1-1	2Pe.022Pe.03	TWM.01TWM.08	MP1	1.3.d.1.4.c.1.7.c.	—

Source: SKOOL21 Level A to 12 curriculum crosswalk (2026), compiled from the teacher guides and student books. Where the two differ, the student book prevails.

Look inside

Read Level 2 online

The full workbook, and the teacher guide where published, in a page-turning reader.

Read online

STEM Innovator’s Workbook, Level 2

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Teacher Guide, Level 2

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Inside the level

What you order

Item	Title	ISBN or SKU
Student workbook	STEM Innovator’s Workbook, Level 2	978-981-17521-1-7
Teacher guidebook	Guidebook, Level 2	978-981-17736-6-2
Learning kit	Early Electronics Kit	STEMSIHKitG2

Assessment built in

Four checkpoints a year use a seven-criterion rubric, and every other project gets a 30 second workbook check.

How assessment works →

Standards mapped

The guidebook maps each project to NGSS, Cambridge and Common Core standards where they apply.

See the table for this level →