| | What does Rex REALLY need to survive? | |
| | | Forcing air in and out like Rex and water over his gills. | |
| | | "I think he needs more space." | |
|
| | | "My project talked about plants giving off oxygern." | |
| | | "Let's give Rex more oxygen. Maybe even more gills?" | |
|
| | "I saw this pump once that put air in the water." | |
| | | How do we give Rex oxygen from air? Won't we suffocate? | |
| | | Learning about levels of energy within the pond ecosystem. | |
|
| | Predators can only hunt one layer beneath or above them. | |
| | | Monitoring Rex's oxygen. Does he need more plants? | |
| | | Our learning log. Do plants make a measurable difference? | |
|
| | Why does the temperature vary so much? | |
| | | | "Stayin' alive. Stayin' alive...Ah, ah, ah, ah... " | |
|
| | | Rex's ecosystem gets "probed." | |
| | | Why does the oxygen keep falling each day? | |
|
| | Ryan I think the air temperature will vary more than water. | |
| | |
| | | | Can Rex see the food? I don't think so. | |
|
| | "I think Rex is using the oxygen and that's why it's going down." | |
| | | Dead men watching...walking | |
| | | "There's still food available on the pond's bottom." | |
|
| | Gasping like Rex in the baggie on the surface. | |
| | | Mrs. Haslet on Science Fridays | |
| |
| | | "I think our room will run out of air." | |
| |
| | |
| | | | scavengers provide much food for other animals as well | |
|
| | Time to count to see if I survived this round. | |
| | | Temperature comparisons to the surrounding air | |
| | | Other ecosystems: Ant & termite niche in a log | |
|
| | | Underground niche. "Look there's animals there, too!" | |
| |
| | Documenting organism diversity at each layer | |
| | |
