Online High School Math & Science Tutor

looking for online tutors for maths and science for high school aged students. classes are for 1 to 4 students at a time. please indicate evidence of expertise in the area and qualifications. uni students can apply... (Budget: $3 - $8 USD, Jobs: Education & Tutoring, Math Tutoring, Mathematics, Matlab and Mathematica, Science Tutoring, Teaching/Lecturing, Time Management)