Horizon Education and Media
Read the letter that Francis Crick wrote to his son about Watson, Crick and Franklin's discovery of the structure of DNA.
Watch "What are DNA and Genes" video.
Do the DNA Base Pairing Game to see how DNA is copied exactly when cells divide, resulting in a code that all cells retain and can give to offspring as heritable information.
Now wrap this up by making edible DNA in an optional activity.