This site is a centralized location where you can find and apply for federal funding opportunities. Managed by the US Department of Health and Human Services, the system stores information on a myriad of grant programs, and evaluates grant applications for 26 federal grant-making agencies. Browse categories and use keywords to search. “How to” and grant writing basics are also found at this site.

STEM Supplies has a useful “STEM Funding Finder” where you can search for opportunities to obtain funds, by state.

Have a creative hands-on STEM project? $3000 to three elementary, middle or high schools. The deadline is November 14, 2014.

Grants, of a minimum of $50,000 per year, are provided to support the development and implementation of programs. The Foundation will provide funds for the purchase of equipment related to programs activities (i.e., computers, activity trunks, laboratory equipment, water and air monitoring apparatus, etc.) as long as the cost of the equipment does not exceed 30 percent of the total grant application.

Targeting grades K-5 Project Based Learning in math or science instruction with measurable outcomes. $1000 grants are available with applications due Oct 1st each year.

Targeting grades 6-12 Project Based Learning in math or science. Applications for less than $5000 are accepted year round, if greater than $5000 there are deadlines of Feb 1st and Aug 1st of each year.

These guys sell STEM education kits-which we are not endorsing-but they also have a plethora of information for educators. You will find Free STEM Resources and STEM Grants as you browse their site.

Public K-12 schools, among others, are encouraged to apply; no private schools. One of their strategic focus areas is STEM education. Applications are accepted year-round. Apply online.

You may have heard of the award winning, non-profit, Project Lead the Way (PLTW) engineering curriculum. PLTW provides STEM grants for elementary, middle, and high schools to implement computer science, engineering, and biomedical science STEM curriculum, as well as professional development for teachers.

A collection of over 2,000 grants and opportunities from federal, state, regional and community sources available to public and private, preK–12 schools, districts and educators. Updated and monitored daily, you can search by six criteria, including areas of focus, content areas and 21st century themes and skills that support your curriculum. You can save information if you register. Sponsored by CDW, a provider of integrated information technology solutions in the US and Canada.

You ask, the donors choose. This online charity provides teachers an opportunity to request funds for classroom projects. Donors give any amount to projects of their choice. When a project reaches its funding goal, DonorsChoose ships the materials to the school. The donors receive photos of the project in action, a letter from you and your students, and accounting of how all monies were spent.
Here is interesting reading if you are interested in the above funding source.

$500 for Professional Development or Classroom Materials. Can be used for a variety of projects and materials, including books, software, calculators, math manipulative, art supplies, audio-visual equipment, and lab materials. Funds must be used within one year of the application deadlines, October 1st and March 1st.

Each fall, a funding cycle with specified award categories opens. Preference is to requests in areas where their operations are located.

This company sells robots, accessories and related software for educators.  They are included here for their STEM Grants Opportunities page, which is updated often.

This group maintains a listing of K12 STEM grants, and check out their home page for Funding News, as well as STEM Resources and Tools. Looks like you can pay them to help you obtain grants, but we have no experience with them and cannot endorse them, in any case.

A multitude of grants for individuals and teams of educators to support instruction , purchase of supplies, professional development, and bringing trainers to school. The applicant must be a member of NEA. Applications are reviewed at different times of the year for the various grants. NEA provide s a guide for writing proposals, and a list of other grantors is provided at this site.

Search for grants and other educator resources.