A little virtual lesson I did about Sigma Notation and how to use it. The quality’s a little rough; apologies – I was making do with my existing equipment!
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Ellen’s Choice: Reading Challenge Digest 3
For today’s Ellen’s Choice, I once again refer you to the newly-updated Reading Challenge page. Books 11 through 15 are now up here, and you can ‘like’ me on Facebook to see the fully up-to-date set of reviews – I’ve just passed the halfway point in the challenge!