The purpose of this lesson is to understand and choose appropriate samples.
Included is a YouTube video to support Grade 9 Blended Learning Math - Unit 9.4: Probabilities and Statistics - Selecting a Sample.
This video demonstrates students measuring the acidity of water, using pH indicator paper and a pH meter. The resource includes a video and a written transcript, and is supported by the Water pH Protocol in the GLOBE Teacher's Guide. This is one of seven videos on hydrology in the 24-part instructional video series describing scientific protocols used by GLOBE (Global Learning and Observation to Benefit the Environment), a worldwide, hands-on, K-12 school-based science education program.
The basic processes involved in manufacturing systems are demonstrated while students produce their own picture frames. They learn about cutting, shaping, assembly, joining and finishing, as well as attention to quality, safety and production quantity.