Software

Software is defined as a computer program intended to provide instruction or assist with instruction.  Software can be placed into two categories - tool software or instructional software.   While tool software may enhance instruction, today's primary focus is on instructional software.  Instructional software can be classified by teaching function: (1) drill-and-practice, (2) tutorial, (3) simulation, (4) instructional game, or (5) problem-solving program.

Drill-and-practice uses a direct strategy.  It provides problems/questions to be answered and the student receives feedback.  An example of this software is Xtramath.  Through drill-and-practice students "race the teacher" while practicing math skills and developing automaticity.  Skills covered include addition, multiplication, subtraction, division.  https://www.xtramath.org/

Tutorials also use a direct strategy.  With this software, all the necessary information is provided to the students along with instructional activities for mastery.  What a wonderful tool for students who are absent.  Math tutorials is a wonderful example of an instructional software site.  http://math.rice.edu/~lanius/Lessons

Simulations use both a direct and a constructivist strategy.  Simulations provide lifelike models to demonstrate how a system operates.  If funding does not allow for the purchase of necessary materials, the next best thing is simulation software.  An example of simulation software is Digital Frog.  http://www.digitalfrog.com

Instructional games also use both a directed and constructivist strategy.  This instructional software provides the opportunity to practice through gaming.  What a wonderful motivational tool!  There are many sites which offer instructional games.  Social studies games can be located at http://playinghistory.org

Problem solving software also uses a direct and constructivist strategy.  Problem solving software provides direct instruction and helps the students develop problem-solving skills by providing opportunities to solve problems.  This is a wonderful method to help students learn how to think. 
Triana Open-Source Problem Solving Environment offers this site: http://www.trianacode.org