Activity 4: How Well I Understood! Let's Find Out: What is the concrete model? Let's Use These Materials: Mathematics notebook and ballpen Let's Do It This Way: 1. Identify whether the given statement is a point, line or plane. 2. Write your answers in your Mathematics notebook. Number 1 is done for you. Point 1. tip of the thumbtacks 2. a string of a guitar 3. strand of a hair 4. a sheet of paper 5. cable wire 6. a whiteboard 7. a small seed 8. top of the table 9. speck of dust 10. a matchstick​