Software can be used to support many types of teaching functions such as drill-and-practice, tutorials, simulations, instructional games or problem-solving programs.(week3)
1.Drill  and Practice, brain pop: http://www.brainpopesl.com/level1/unit4/lesson1/warmup
    allows leraners to worl problems or answer questions and get feedback.
2.Tutorial, ETCAI: http://etcai.com/index
    Acts as a human tutor by providing all the information and instructional activites a learner needs to
    master a topic.
3.Simulation, Digitak Frog: http://digitalfrog.com
   Models real or imaginary sysems to show haow those systems or similiar ones work.
4. Instructional Games, iCivics: http://icivics.org
    Increases motivation by adding game rules to drills or simulations.
5. Problem Solving, Memory Challenge: http://www.criticalthinking.org
    Teaches the steps involved in solving problems.
    Helps learners acquire problem -solving skills by giving them opportunities to solve problems.