Grade 4 NST Term 2 Week 2: Changes of State – Heating, Cooling and Materials Around Us

Your Week Ahead

This week your Grade 4 NST class dives into one of the most tangible and exciting topics in the Intermediate Phase: changes of state. Learners explore what happens to solids, liquids, and gases when heat is added or removed. They look at four key processes, melting, evaporating, condensing, and freezing, and connect each one to everyday materials they already know. Think ice cubes, boiling water, steam on a bathroom mirror, and candle wax. These are not abstract ideas; they are things learners have seen at home this very week.

In the curriculum sequence, this topic builds directly on the Grade 4 Term 1 work on properties of materials, where learners identified whether substances are solid, liquid, or gas. Now they take the next step and see that those categories are not fixed. A substance can move between states depending on temperature. That shift in thinking, from classifying to understanding change, is an important conceptual leap for this phase.

Coming into this week, learners should have a basic understanding that materials exist as solids, liquids, and gases. They should be able to give examples of each. If you notice gaps there, a quick five-minute recap on Day 1 will set everyone up for success before you move into the new content.

What Teachers Are Searching For

• CAPS-aligned lesson plans for Grade 4 NST Term 2: Many teachers search for resources like the “isizulu caps document grade 4-6 pdf” when trying to cross-reference curriculum requirements across subjects. If you are doing the same for NST, the CAPS document for Natural Sciences and Technology (Intermediate Phase) outlines changes of state under the Materials strand for Grade 4 Term 2. This week’s lesson plan is built directly from that ATP.
• Practical activities for changes of state in Grade 4: This topic lends itself beautifully to simple demonstrations and hands-on investigations. Teachers often look for activities that work with limited resources. Melting ice, observing steam, and watching water freeze overnight are all low-cost and high-impact options you can use in your classroom this week.
• Cross-subject planning for Term 2: Some teachers searching for resources such as “life skills lesson plans pdf grade 4 term 2” are trying to plan across subjects at the same time. While this week’s focus is firmly in NST, the concept of change, things transforming and going back again, connects well to Life Skills discussions about cycles in nature, which can be a useful bridge if you are doing integrated planning.

This Week’s Lesson Plan

This three-day plan moves learners from recapping the three states of matter, through understanding what heating and cooling do to materials, and into applying those ideas with examples and simple investigations.

Day 1: Recap solids, liquids, and gases using everyday examples, then introduce the concept that heating and cooling can cause materials to change state. Learners sort picture cards and discuss what they observe when ice melts or water boils.

Day 2: Focus on melting and evaporating as the effects of heating. Learners observe a simple in-class demonstration (ice melting at room temperature or a wet cloth drying) and record what they notice. Introduce vocabulary: melting point, evaporation.

Day 3: Cover condensing and freezing/solidifying as the effects of cooling. Learners connect each process to a real-life example and complete a diagram showing the four changes of state as a cycle. Wrap up with a short class discussion to consolidate understanding.

Download Your Lesson Plan

Download the full 3-day lesson plan as a Word document. Includes detailed activities, differentiation notes, and assessment guidance.

Download Lesson Plan (Word)