| Code | Description |
|---|---|
| LER 2484 | LEVEL 1: MICROSCOPIC MYSTERIES I GRADES 1-3 |
| LER 2482 | POND PARADISE GRADES 1-3 |
| LER 2803 | METAMORPHOSIS Amazing Transformations LEVEL 1 |
| LER 2816 | UNDER YOUR SKIN LEVEL 1 The Muscular & Skeletal System |
| LER 2810 | ANIMAL OUTSIDES LEVEL 1 Fur, Feathers, Skin & Scales |
| LER 2815 | QUAKE, RATTLE & ROLL Earthquakes, Volcanoes & Avalanches LEVEL 1 |
| LER 2813 | UNDERWATER PREDATORS LEVEL 1 |
| LER 2801 | HOMES, HOLES, & HABITATS LEVEL 1 |
| LER 2814 | CREEPY CREATURES The World of Bugs LEVEL 1 |
| LER 2804 | MICROSCOPIC MYSTERIES III LEVEL 1 |
| LER 2800 | ARMED ANIMALS LEVEL 1 |
| LER 2812 | DESERT ECOSYSTEMS LEVEL 1 |
| LER 2483 | BODILY KNOWLEDGE LEVEL 1 |
| LER 2802 | ALL ABOUT YOUR ORGANS LEVEL 1 |
| LER 2575 | LEVEL II: HUMAN BODY – THE INSIDE STUFF GRADES 4-8 |
| LER 2577 | PLANT PARAPHERNALIA GRADES 4-8 |
| LER 2578 | MICROSCOPIC MYSTERIES II GRADES 4-8 |
| LER 2576 | GERMS, GRIME & GRUNGIES GRADES 4-8 |
| LER 2851 | RAIN FOREST ECOSYSTEMS LEVEL 2 |
| LER 2805 | FEEDING FRENZY Animal Mouth Parts LEVEL 2 |
| LER 2854 | RACING THROUGH SPACE Galaxies, Stars & Comets LEVEL 2 |
| LER 2852 | THE PUMPING STATION Your Circulatory System LEVEL 2 |
| LER 2856 | AT YOUR COMMAND LEVEL 2 The Nervous and Endocrine System |
| LER 2855 | SAVAGE STORMS LEVEL 2 Watching Dangerous Weather |
| LER 2807 | THE BREATHING BODY Your Respiratory System LEVEL 2 |
| LER 2850 | EARTH AND BEYOND The Nine Planets LEVEL 2 |
| LER 2808 | UNEARTHING ROCKS, MINERALS & GEMS LEVEL 2 |
| LER 2853 | FROM EGG TO ANIMAL Embryology LEVEL 2 |
| LER 2466 | SLIDE VIEWER |