K: 4 planets (Mercury, Venus, Earth, Mars), walking pace, simple planet colors and sizes, basic movements at each station
1st: All 8 planets, jogging pace, basic facts (hot/cold, big/small), planet-themed movements (jump like low gravity)
2nd: Planet order and characteristics, running pace, distance comparisons, more complex physical challenges
3rd: Moons, asteroid belt, space exploration facts, varied locomotor skills, research integration
4th: Gravity concepts, space missions, advanced space science, leadership roles in teaching others