about iLogic

iLogic is a free online interactive textbook for introductory college level logic courses. In addition to doing a small part to make higher education more affordable and accessible, the textbook is developed with the main goal of helping student learning. It was completed and made available online in August 2008.

Revisions and updates were made in summer 2010.
Exercise 3.3 was made interactive without using Flash in summer 2011.
The following revisions and updates were made in summer 2014:

Part of section 1.3 was rewritten.
Most Flash contents (except some in Exercise 3.2) were converted to or replaced with contents in HTML5 format so that they can be viewed on iPads and Android tablets.

Section 3.4 was added in January 2015.
Exercise 3.2 was made interactive in HTML5 format in June 2016.
The following revisions and updates were made in spring 2021:

Exercise 1.1 and 1.3 were updated to make it easier to correct answers and redo each exercise with new questions.
Various revisions and updates were made throughout the sections to make the webpages more responsive on phones, tablets and computers.

Wu Weiming

Other works by Wu Weiming can be accessed from

Sitting under a bodhi tree ...

This work is licensed under CC BY-NC-ND 4.0