Package includes 6 copies each of:

• Ecosystems - Approaching Level, ELL, On Level, Beyond Level
• Building a Biome - Approaching Level, ELL, On Level, Beyond Level
• Discovering the Elements - Approaching Level, ELL, On Level, Beyond Level
• Strong as Steel - Approaching Level, ELL, On Level, Beyond Level
• Shake, Rattle, Explode! - Approaching Level, ELL, On Level, Beyond Level
• Alloys: Metals in the Mix - Approaching Level, ELL, On Level, Beyond Level
• Mixtures and Solutions - Approaching Level, ELL, On Level, Beyond Level
• Weird and Wonderful Plants - Approaching Level, ELL, On Level, Beyond Level
• The Water Cycle - Approaching Level, ELL, On Level, Beyond Level
• The Galileo Mission to Jupiter - Approaching Level, ELL, On Level, Beyond Level
• The Sun and Other Stars - Approaching Level, ELL, On Level, Beyond Level
• Plants - Approaching Level, ELL, On Level, Beyond Level