Reference Topics 3-6

This site presents an interesting logic calculator:
http://www.inf.unibz.it/~franconi/teaching/propcalc/

These sites considers logic gates (with links to other logic topics):
http://www.jhu.edu/~virtlab/logic/log_cir.htm

This site, Basic Gates and Functions provides a nice discussion of logic circuits:
http://www.ee.surrey.ac.uk/Projects/Labview/gatesfunc/index.htmlSee the whole entry

Reference Topics 2-2

This is a web-based instructional module on the algebra of sets.

http://www.math-only-math.com/laws-of-algebra-of-sets.html

Union of Sets:
https://www.basic-mathematics.com/union-of-sets.html

Intersection of Sets:
https://www.basic-mathematics.com/intersection-of-sets.html

Venn Diagrams for union and intersection:
https://www.mathsisfun.com/sets/venn-diagrams.htmlSee the whole entry

Reference Topics 1-1

PASCAL’S TRIANGLE:
An interactive version of Pascal’s Triangle.
http://mathforum.org/dr.cgi/pascal.cgi

Here is another site on Pascal’s triangle:
http://mathforum.org/web.comments/ladja.pascal.html

PROBLEM SOLVING:
This site give a nice introduction to problem-solving.
http://mathfocus.tripod.com/page3.html
A site which lists other sites on mathematical puzzles:
https://www.mynhusd.org/See the whole entry