This is a comprehensive unit plan for your 'reversible and irreversible changes' unit. It includes a pre-assessment quiz, posters, note taking slides, hands-on activities, investigation ideas, links to videos, and questioning prompts.It includes:• States of matter• Reversible changes (evaporating, condensing, dissolving, etc.)• Irreversible changes (burning, cooking, rusting)• Safe practices• Scientific reports (fair testing)The resource uses 'Open Dyslexic' font and most pages include key words