Lesson 2: How are ratios and proportions connected to color blending?
By Saveth Soun
Outcome: The student will perform color blending by converting ratios to grams. The student will use cross multiplying as demonstrated in earlier unit.
Conditions: The lesson will take one day.
Anticipatory Set: As the students are walking into room, teacher is actually working on blending a new color. The ratios and conversions into grams should be up on overhead. Students' attention will immediately be drawn to teacher and this informal demonstration. After warning bell rings, teacher announces to class what she is working on and informs class that she will do another demonstration. This should take only about ten minutes. Ask for class response when converting from ratios to grams.
Lesson Development: Have students break up into their STAD teams. Hand out to class the activity lab sheets. Each team works on completing four color blending activities. Teacher needs to facilitate this by walking around to the different groups and answering questions and checking to make sure everyone stays on task. Each completed blended color needs to get stored in empty glass containers and labeled.
Materials: Scales, Paints, Empty glass containers (to store finished colors), pencils, overhead, overhead markers
Assessment: Teacher uses Academic Rubric to grade accuracy of lab activity sheets. Teacher uses Life Skills' Rubric to grade on teamwork skills.
Standards: Mathematics Framework for California Public Schools / Mathematics Content Standards, grade 6, number sense, 1.2 and 1.3.