This editable differentiated lesson pack focuses on investigating the factors that affect how quickly a solid dissolves. Children draw on everyday experiences to generate ideas, then choose one variable, such as temperature, particle size or stirring rate, to test in a fair comparative enquiry. In the main activity, pupils identify variables, make a prediction, carry out repeated tests, and record dissolving times in a results table. The lesson develops understanding of fair testing, strengthens prediction and recording skills, and helps children explain patterns in their results using clear scientific reasoning. The file includes the following resources: - editable teaching presentation - editable investigation worksheets - editable additional activity ideas - editable lesson plan - editable focus assessment worksheet

National Curriculum objectives Science: Year 5 Pupils should be taught to:

 know that some materials will dissolve in liquid to form a solution demonstrate that dissolving, mixing and changes of state are reversible changes

Working scientifically:

using test results to make predictions to set up further comparative and fair tests Planning different types of scientific enquiries to answer questions, including recognising and controlling variables where necessary Recording data and results of increasing complexity using tables and line graphs

Updated to the Grammarsaurus Curriculum 2.0...