In these experiments, participants read a brief introduction to the topic of recycling and then were asked to list the thoughts they had about the issue. (sciencedaily.com)
It is a good introduction to the topic as it exposes children to key river concepts and a wide range of related vocabulary. (tes.com)
The information presented in our learning center is designed to provide a general introduction to a topic and is for educational purposes only. (protective.com)