These activities came from a variety of online sources over several years so I am sorry I do not have links to them. Some of the are from FCRR and some are from the Third Grade Wiki. Many of them I found simply by typing the topic into Google. A googling tip that works well for me is to enter the topic and them add pdf. That way I know I am not getting useless links. Adding pdf usually outputs an activity rather than an article or lesson plan.
The cards have scenarios on them and students have to sort them based on the author's purpose. The correct answers are written on the back of the cards so that students can self-check.
For another center that features author's purpose check out Beanbag Toss
Cause and Effect
In this first activity, the students have to sort the cards to create a cause and effect relationship. The second activity is a little lower in level because there are choices to complete the cause-effect relationship rather than students creating their own. I only used one linking word, but you can also add in others to increase the complexity.
Fact and Opinion
In both activities students read a statement on the card and decide if it is a fact or an opinion. In the activity on the left the cards are sorted and in the activity on the right the students give oral responses.
Both sets of cards are coded on the back with the correct answers.
Synonyms and Antonyms
These card games are differentiated by reading ability. The first one is a higher level because the vocabulary is more academic than conversational. The second activity, Dominoes, is more rigorous because it requires students to think ahead and anticipate future responses when linking the synonyms and antonyms together. The last two sets of cards are the same matching activity, but one set of cards has picture cues and one doesn't.