Lesson 2
Decision boxes
Introduction
In this ‘unplugged’ lesson, pupils further develop their understanding of selection using decision boxes and creating flowchart algorithms.
Learning objectives
- To understand how selection is represented in flowcharts
- To understand and use decision boxes
- To create flowcharts algorithms
You will need
Downloadable resources:
- Lesson plan
- Lesson slides
- Student handouts
- Blank flowchart algorithm
- Completed flowchart algorithm
- Algorithm support sheet
Other resources:
Batteries, alligator / crocodile clip leads, lightbulbs, buzzers (optional), motors (optional), kitchen foil (optional), scissors (optional), pencils (optional), coins (optional), felt cloth (optional), erasers (optional), pencil sharpeners (optional)
Quick links
Lesson plan
Introduction: Flowchart algorithms (5 minutes)
Decision boxes (10 minutes)
Electrical circuits (15 minutes)
Algorithms with decision boxes (25 minutes)
Evaluating algorithms (10 minutes)
Extension ideas
Differentiation
Opportunities for assessment
This content is published under a Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) licence.