This is an anytime activity. The answer key is provided, too. Use this puzzle at the beginning of school after you have taught the scientific method, before a holiday, on a day you are sick or take personal time, and if you teach osmosis you can revisit high concentration to low concentration and vice versa. This activity makes a good ho hum crasher on a Friday, especially if students can "personalize" their work.
The is a content activity in sequencing, and it makes a nice crossover activity for the reading strategy of sequencing. It asks students to find key words to help them sequence the experiment.
Each student gets a puzzle page of an experiment on osmosis. Each student cuts out the pieces. Each student then reconstructs and categorizes the experiment into Before, During, and After. Once the sequencing is correct, they glue the pieces onto another sheet of paper or into their science notebook. If they glue onto construction paper you can post the most amazing work on the bulletin board.
Note: Students do not need to know about osmosis to do this activity, and it introduces a concept they will need to learn in Biology and Chemistry.
As an extension: Have students label the hypothesis, procedure, conclusion. They can identify the question and discuss the independent variable. If you are studying osmosis the class can do this experiment, and see if they get the same results.
If you are using this as an observation, then be sure to help students highlight or underline words of sequence. This will help your lesson to be interdisciplinary in nature (English).