DonorsChoose.org – Public school teachers post classroom project requests, and donors choose which projects they want to support.  No deadline.

Vernier Technology Grants – Grants for “Data Collection Technology” lists 64 competitive grants for teachers to fund equipment in their classrooms, some funded by Vernier, others by private companies and various professional organizations.

Toshiba America Foundation Grants – Grants for student projects less than $5,000 are evaluated on a rolling basis.

National Weather Association (NWA) Sol Hirsh Education Fund Grants – for teachers at grades K-12 to improve their student’s understanding of meteorological sciences.