This transition document summarizes the key ideas around teaching mixtures and solutions to 4th grade students. It compares the 2010 and 1998 Texas Essential Knowledge and Skills standards, noting performance indicators and lesson considerations. Students will compare and contrast different mixtures and solutions, such as rocks in sand or sugar in water. They will create a graphic organizer to observe, measure, record, and describe the properties of substances to determine if they are a mixture or solution. Lessons from 5th grade CSCOPE materials on mixtures and solutions can be adapted for the 4th grade standards.