🧪 Grade 2 Science Unit – Matter and Energy Properties of Liquids and Solids | NGSS Aligned | 10 Complete Lessons Looking for a complete Grade 2 science unit on matter and energy? This 10-lesson resource teaches students about solids, liquids, melting, freezing, mixtures, dissolving, floating and sinking, safety, and environmental responsibility, all aligned to NGSS Grade 2 Physical Science standards. This is NOT a worksheet packet — it is a structured, ready-to-teach unit with built-in inst