Summary

Students will use the periodic table to solve a riddle. Afterwards, students will choose two of the elements used in the riddle to compare their atomic structure. This is a great activity for students to learn about elements atomic numbers. I would like to add a modification to this activity. I like to use the game, "What Am I?" In this game the students write the chemical symbol for an element on a post it note and choose another student and place it on their forehead, without them knowing what it is. When every student has a post it note on their forehead, they will walk around the class and take turns with other students giving clues to the student wearing the post it about their element. They could give clues like: number of protons, Family, period, etc.... When the student guesses his/her element, then they have 1 point. The students can collect as many points within the time frame the teacher allows.