The following are substandard learnt in grade 4,5and6.group them under the component of integrated science , heat energy

That's an interesting challenge! To help you group those learning objectives, could you first share the specific "substandard" (I assume you mean learning objectives or standards) from grades 4, 5, and 6 that you're working with? Once we have those, we can start thinking about how they connect to heat energy.