After receiving your undergraduate degree, successfully complete a teacher certification program or receive a master's degree in teaching with a subject area emphasis in math. Education certification programs for math teachers include coursework in pedagogy and curriculum development as well as a student-teaching practicum. For a list of accredited institutions in Washington that offer teacher education programs, go to the website of the Professional Educator Standards Board Washington.
Register to take the WEST-B (Washington Educator Skills Basic) test as well as the WEST-E (Washington Educator Skills Tests Endorsement) exam in math. The WEST-B tests the applicant's basic reading, writing and math skills, while the WEST-E measures the applicant's expertise in the subject area. Visit the Washington Educator Skills Test website (west.nesinc.com) to register for the exams online and to access study guides for the tests.
Apply for your Washington teaching license by going to the OPSI (Office of Superintendent of Public Information) website to create an online account. Doing so will allow you to access the required application forms, most of which can be filled out online. Follow the instructions provided on the website, taking note of the supplemental documents such as transcripts, fingerprints and test scores as well as an application fee that needs to be sent in as part of the application process.
Once your certification application has been verified and approved, start looking for teaching jobs in Washington by visiting websites such as Teacher Jobs (teacherjobs.com). Create an online account and fill out the Teacher Qualification Form and upload your resume along with other credential documents. Doing so will allow you to apply directly for jobs listed on the website as well as to have potential employers contact you.