This activity will help students hypothesize on the type of angle in everyday objects and also measure those angles to check the correctness of their hypotheses. This should be used after an explanation of the types of angles (acute, obtuse, right, or straight) has already been done in the classroom. Materials: Protractor Everyday objects with various types of angles Procedure: Ask the students to explore the room and find examples (2 of each type of angle) of what looks like each angle type (acute, obtuse, right, straight). Some ideas are window frames, erasers, open books, etc. Note: This part may need the teacher to observe the room prior to the lesson to make sure there are examples of all of the types of angles available or to add small items to make sure there are examples for the students to find while doing the project. Make a list on a piece of paper of observed angles from the common items. Allow the students to use protractors to measure the angles of the objects that were discovered. Make a table of the item, hypothesized angle, and measured angle to compare observation and numerical data. Make lists on a piece of paper of the item and what type of angle it