Below is how the official curriculum organizes it. Each strand will get full lessons like the ones in Grade 1 Mathematics.
Plant Growth and Changes: germination and plant growth; how plants and people depend on each other
Structures and Materials: materials and joints; strong, stable, balanced structures
Magnetism and Static Electricity: contact and non-contact forces and their uses
Exploring Soils: soil types, water absorption and soil's role for living things