424 cross multiplying to check for equivalent fractions play the lesson summary and review any concepts students need clarified check for understanding by demonstrating problems and guiding . Fractions are found everywhere in daily life not just math class in this lesson learn how a fraction is a part of a whole how you write a fraction and how fractions can be equivalent to one . In todays lesson the students learn to find equivalent fractions this aligns with 4nfa1 because the students will e xplain why a fraction a b is equivalent to a fraction n x a n x b by using visual fraction models with attention to how the number and size of the parts differ even though the two fractions themselves are the same size to begin the lesson i give each student a . Explain that to determine if two fractions are equivalent you must be able to multiply or divide the numerator and denominator by the same number ask students what they can multiply both the numerator and denominator by in 1 2 to have it equal 2 4 show students other fractions that are equivalent to 1 2 and 2 4 such as 3 6 12 24 and 100 200. Mathematics 4th grade unit 5 fraction equivalence and ordering fraction equivalence and ordering students began their study of fractions in grades 1 and 2 where students learned to partition rectangles and circles into halves thirds and fourths use this principle to recognize and generate equivalent fractions 4nfa2
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