Grade 5 Math lesson plan: Adding & subtracting fractions
Topic: Adding and subtracting fractions with unlike denominators (5.NF.A.1). Adjust the settings, then copy the prompt.
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Planning notes for this lesson
Prerequisite skills to check: equivalent fractions (4.NF.A.1); adding and subtracting fractions and mixed numbers with like denominators (4.NF.B.3); finding multiples and common multiples (4.OA.B.4).
Key vocabulary: unlike denominators, common denominator, equivalent fraction, least common multiple, mixed number, benchmark fraction.
Warm-up idea: Ask: if you eat 1/2 of a pizza and a friend eats 1/3 of a same-size pizza, did you two eat more or less than one whole pizza? Take guesses before modeling it.
Exit ticket idea: Students solve 2/3 + 1/4 and 3 1/2 - 1 3/4, then explain why 2/5 + 1/2 cannot equal 3/7.
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Quiz on the same standard
After the lesson, check understanding with a full quiz and answer key on this topic.