| What will be covered in Unit Twelve? Use a factor tree to find the prime factors of a number; find the greatest common factor and the least common multiple of two numbers. Find the number of ways in which a sequence of choices can be made; use tree diagrams; find probabilities in "equally likely" situations. Model and solve problems involving ratios of part of a set to the whole set. Write and solve number models for ratio number stories. Find students' heart rates. Find heart rates after increasingly strenuous exercise; graph personal and class heart-rate data. |