Presidential Awards for Excellence in Mathematics and Science Teaching:
The Presidential Awards for Excellence in Mathematics and Science Teaching (PAEMST) are the highest honors bestowed by the United States government specifically for K-12 mathematics and science (including computer science) teaching. Established by Congress in 1983, the President may recognize up to 108 exemplary teachers each year. Applications for teachers of grades K-6 are now open. Applications must be completed by May 1, 2018. KSDE support resources can be found here.
Presidential Innovation Award for Environmental Educators:
The Presidential Innovation Award for Environmental Educators recognizes outstanding kindergarten through grade 12 teachers who employ innovative approaches to environmental education and use the environment as a context for learning for their students. The White House Council on Environmental Quality (CEQ), in partnership with the U.S. Environmental Protection Agency (EPA) administers this award to honor, support and encourage educators who incorporate environmental education in their classrooms & teaching methods. Applications are due by March 1, 2018.
U.S. Department of Education Green Ribbon Schools:
This prestigious award is given to select schools across the nation that the U.S. Department of Education Green Ribbon Schools recognizes as schools that save energy, reduce costs, feature environmentally sustainable learning spaces, protect health, foster wellness, and offer environmental education to boost academic achievement and community engagement. The recognition award is part of a larger U.S. Department of Education (Department) effort to identify and disseminate knowledge about practices proven to result in improved student engagement, academic achievement, graduation rates, and workforce preparedness, as well as a government-wide aim to increase energy independence and economic security. Applications are due by January 10, 2018.
Other K-12 Science Educator Grants, Scholarships, and Award Opportunities:
The National Science Teachers Association posts many other opportunities that are searchable by monthly deadlines, grants/fellowships, awards/competitions, and more. You can find their free site here.