Terrarium Science Kit. (NEW & IMPROVED-Includes Horticultural Charcoal) Build Your Own Miniature Garden. Great For Students Who Want to Learn About Botany, Eco-Systems and the Life Cycle of Plants. EVERYTHING YOU NEED TO DESIGN YOUR OWN TERRARIUM. Each kit contains 1-Large Plastic Terrarium Jar (6.575" x 3.78"), 1-Plant Mister, Potting Mix, Mini River Stones, Horticultural Charcoal, Organic Wheat Seeds, Organic Chia Seeds, Decorative Sand and Instructions. NEW AND IMPROVED AND INCREDIBLY EASY TO USE: Just assemble everything, water it and watch it grow. Our Terrarium now comes with horticultural charcoal for a healthier terrarium. The added charcoal removes toxins, reduces odors, increases drainage and holds on to moisture. FUN WAY TO GET KIDS INTERESTED IN BOTANY. Kids love to learn and see how things work. They will learn about botany (the biology of plants), how eco-systems work and will see first-hand how seeds, soil, sun, and water work together to transform into beautiful plants. QUALITY COMPONENTS. Our terrarium jar is made of durable plastic and if watered everyday, our seeds begin to germinate in 3-4 days. GREAT FOR ENCOURAGING STEM LEARNING! Ideal for elementary and middle school students. Recommended for age 5 and up with adult supervision.