Many teachers have developed "tried and true" lessons that they look forward to teaching-- mystery powders is one that these authors like. Originally part of the Elementary Science Study curricula in the 1960s, there are now many different versions of this well-known activity in which students examine physical and chemical properties of…

This article describes a lesson taught in a designated English Language Learner (ELL) classroom in an elementary school in Pawtucket, Rhode Island, using a sheltered instruction approach. Eighty one percent of the students at this school are from diverse ethnic backgrounds where 25 per cent of them receive ELL services. A variety of languages are…

In an activity sequence that took place over several days, the class learned about sound and how people hear sounds. Following each activity, students engaged in whole-group sharing sessions and individual journal-writing sessions that were designed to help them see the patterns that emerged from their explorations. The activities were carefully…

As argumentation is weaved into classroom lessons, students know what to ask, how to analyze the given information before forming a conclusion, and are able to support their reasoning with solid evidence. They will hold firm to their conclusions until proven wrong. Whether it's a discussion about whether air is matter or how speed and friction are…