How can I design a science experiment that involves collecting and analyzing data from multiple sources with limited resources?

I totally get where you're coming from - designing an experiment with limited resources can be tough, but it's great that you're thinking creatively. To start, I think it's awesome that you have a small greenhouse and a weather station to work with. For collecting data, you could have students measure temperature, humidity, and light levels in the greenhouse, as well as track the growth of plants at different temperatures. You could also use the weather station to gather data on outdoor temperature, precipitation, and other environmental factors that might affect plant growth.

One thing to keep in mind is making sure the data is accurate and reliable. You could have students take multiple measurements at different times of day, and use the digital thermometers to get precise temperature readings. The weather station should also provide pretty reliable data, but it's a good idea to double-check the readings against other sources, like a local news station or weather website. As for statistical analysis, you could have students use simple methods like graphing and regression to compare the data from different sources and look for patterns.

I think one of the coolest things about this experiment is that it lets students see how different factors interact with each other. For example, they could look at how temperature affects plant growth, but also how other factors like light and water affect the relationship between temperature and growth. By collecting and analyzing data from multiple sources, students can get a more complete picture of what's going on and develop some really valuable critical thinking skills. Plus, it's a great way to show them how science works in the real world, where you often have to deal with limited resources and incomplete data.

Overall, I think you're on the right track, and with a little creativity, you can design an experiment that's both fun and educational for your students. Don't be afraid to think outside the box and come up with your own unique methods for collecting and analyzing data - and don't hesitate to reach out if you have any more questions or need further guidance. Good luck with the experiment, and I hope you and your students have a blast with it!