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Afterschool Lesson Plan Database

Lesson Plan

Algebra: Growing Rock Candy
Subject: Math
Grade span: 3 to 5
Duration: One week of observation followed by a one-hour lesson
This lesson was excerpted from the Afterschool Training Toolkit under the promising practice: Math Tools


This sample lesson is one example of how you can implement the Math Tools practice. In this activity, students will watch the growth of rock candy over a given length of time, describe the varying rate of change they observe, and graph these changes.

Learning Goals:



What to Do:

Teaching Tips:

Sample Table for Rock Candy Growth

Rock Candy Chart 1

Change is calculated by subtracting previous day's height from current day's height.

Using graph paper, allow students to use either bar or line graphs to represent the growth pattern of their rock candy. A bar graph illustrating the information above might be illustrated:

Rock Candy Chart 1

A line graph illustrating the growth of the rock candy:

Rock Candy Chart 1

A printable PDF version of this page is also available. (PDF)

Evaluate (Outcomes to look for):

Click this link to see additional learning goals, grade-level benchmarks, and standards covered in this lesson.

Online Training for Afterschool Staff
The Afterschool Training Toolkit is available online free of charge.

The following resources can be used with the online Afterschool Training Toolkit to give you the resources you need to build fun, innovative, and academically enriching afterschool activities.