Elevate is the one and only choice for me, check it out, it might be what you're looking for. It provides awesomely designed and prepared math-related (and many other) challenges that start simple and get more complicated depending on how good is your progress. Although, as one of the posters...
We won't know until we try it, but my general feeling is that it would generally not be safe to eat the plants, generally safe to eat the animals, but with a 50% chance that the alien biochemistry uses the other handedness, so they'd have negligible nutritional value.
The difference is that...
Temperatures and Solar Cycles follow each other very closely. More importantly you will see that it is not exact. You will have times of higher sunspots and lower temperatures and you will also have the opposite. Why is this so important? Because weather is not based on one element. You could...
People in science careers often need a strong ability to concentrate even in the midst of noise, but they must also have the capability of dreaming about possible directions to try or experiments to perform.
Related to academic performance, you should practice doing science. This can be on your own (as a kid I studied the ants in our house and wrote a report detailing my findings) or within a research lab. Often there are summer projects in research labs even for high school students and once in...