## Objectives 4.NBT.1 - Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division.
4.NBT.2 - Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >;;, =, and < symbols to record the results of comparisons. 4.NBT.3 - Use place value understanding to round multi-digit whole numbers to any place. 4.NF.1 Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × 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. Use this principle to recognize and generate equivalent fractions.4.NF.2 Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >,=, or <, and justify the conclusions, e.g., by using a visual fraction model.4.NF.3 Understand a fraction a/b with a >;;; 1 as a sum of fractions 1/b. a. Understand addition and subtraction of fractions as joining and separating parts referring to the same whole. b. Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a visual fraction model. Examples: 3/8 = 1/8 + 1/8 + 1/8; 3/8 = 1/8 + 2/8; 2 1/8 = 1 + 1 + 1/8 = 8/8 + 8/8 + 1/8. c. Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction. d. Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.4.NF.4 - Apply and extend previous understandings of multiplication to multiply a fraction by a whole number.a. Understand a fraction a/b as a multiple of 1/b. For example, use a visual fraction model to represent 5/4 as the product 5 × (1/4), recording the conclusion by the equation 5/4 = 5 × (1/4).b. Understand a multiple of a/b as a multiple of 1/b, and use this understanding to multiply a fraction by a whole number. For example, use a visual fraction model to express 3 × (2/5) as 6 × (1/5), recognizing this product as 6/5. (In general, n × (a/b) = (n × a)/b.)c. Solve word problems involving multiplication of a fraction by a whole number, e.g., by using visual fraction models and equations to represent the problem. For example, if each person at a party will eat 3/8 of a pound of roast beef, and there will be 5 people at the party, how many pounds of roast beef will be needed? Between what two whole numbers does your answer lie? |
## Videoshttps://learnzillion.com/lesson_plans/1172#lesson-tab
https://learnzillion.com/lesson_plans/8993-use-a-place-value-chart-and-arrow-cards-to-understand-large-numbers https://learnzillion.com/lesson_plans/7649-model-numbers-using-base-ten-blocks https://learnzillion.com/lesson_plans/7426-understand-relationships-between-digits-and-their-place-value Multiplying Fractions using Visual Models and Number Lineswww.khanacademy.org/math/arithmetic/fraction-arithmetic/arith-review-multiply-fractions/v/visualizing-fraction-products Multiplying Mixed Fractionswww.mathsisfun.com/mixed-fractions-multiply.html Equivalent Fractionshttps://learnzillion.com/resources/72355-understand-and-explain-equivalent-fractions-using-visual-models-4-nf-a-1 Adding and Subtracting Fractionshttps://learnzillion.com/resources/72985-understand-addition-and-subtraction-of-fractions-and-decomposing-fractions-4-nf-b-3a Comparing Fractionshttps://learnzillion.com/resources/72786-compare-fractions-by-creating-common-denominators-or-numerators-4-nf-a-2 |