This demonstration illustrates the presence and importance of chemistry in everyday objects, including our food. It is an interesting way to start the discussion of acids and bases or to connect acids and bases to the pH scale and extend the discussion to acid-base indicators. Red cabbage is an example of a naturally-occurring acid-base indicator. Many household products are acids or bases and often products that are used for similar tasks have similar pH values.
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Guidelines for Constructive Demonstrations/Activities
Categories: Lab/Student Activity, Teacher Demonstration
The demonstrations/activities in this resource have been designed to challenge students' thinking as well as initiate lively classroom discussions that support constructivist learning. These short... read more
Integration of Robotics (Arduino) and Coding into Grade 9 Science (Applied and Academic)
Categories: Lab/Student Activity, Lesson Plan
by ERIN KEYZERS The purpose of these lessons is to integrate robotics (micro-controllers such as Arduino boards) and computational thinking/coding within the Grade 9 Science curriculum. This... read more
Student Activity: Refraction of Light - Reappearing Penny
Categories: Lab/Student Activity
This demonstration serves as a superb introduction to the refraction of light. Students will view a penny at the bottom of an opaque plastic cup. After moving slightly so that the penny just barely... read more
