Hour of Code: Hydrangea Danger Lesson Plan

Overview

This code activity builds on the Frozen Fractals activity, introducing students to further computational thinking concepts including variables, decisions, and conditionals.

In this activity students will draw hydrangea flowers, and learn that the colour of the flowers depends on the pH of the soil.

The activity is structured as sequence of interactive notes and questions that students are challenged to answer. Students use the Turtle module in the Blockly visual programming language to draw images of increasing complexity.

Learning Objectives

Students will:

• get input from the user
• store data in variables
• make decisions using if-elif-else blocks
• use loops to control how programs run

Extended Activities

How and why do hydrangeas change colour?

Learn more here.

What is soil pH, and how does it affect the way different plants grow?

• For younger students
• For older students

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