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 Enlarge The Grapes of Math: Mind-Stretching Math RiddlesAuthor: Gregory TangIllustrator: Harry BriggsPublisher: Scholastic BookshelfCopyright: 2001ISBN: 0-439-59840-0Number of Pages: 40Ohio Standards Alignment: Grades 1–4An important objective of The Grapes of Math is to prompt children to use counting strategies beyond merely counting one by one. Grouping objects in sets of 10, for example, and then adding all the 10s is a clever way to count a large number of objects. The illustrations, as well as the rhymes, challenge young learners to look for these strategies.  Go to: How to Use This BookHighlights and InsightsRelated ORC ResourcesOhio Standards

 How to Use This Book Use for problem solving in a counting situation. Use to launch a lesson on multiplication.
 Highlights and Insights The exploration of arrays is important when students are constructing the idea of multiplication as repeated addition. Counting by tens lays the foundation for place value. The Grapes of Math allows students to explore counting strategies that will eventually lead to writing equations.
 Related ORC Resources All About Multiplication 2: Exploring Equal SetsORC# 4345Resource InformationResource Type: LessonsDiscipline: MathematicsGrades: Grades 3–4Professional Commentary: Students listen to the counting story, What Comes in 2's, 3's, & 4's, and then use counters to set up multiple sets of equal size. They fill in a table listing the number of sets, the number of objects in each set, and the total number in all....MORE...
 Ohio Standards Number, Number Sense and Operations StandardBenchmarks (K-2)F. Count, using numerals and ordinal numbers.I. Model, represent and explain multiplication as repeated addition, rectangular arrays and skip counting.Benchmarks (3-4)G. Model and use commutative and associative properties for addition and multiplication.Grade Level Indicators (1)2. Recognize and generate equivalent forms for the same number using physical models, words and number expressions; e.g., concept of ten is described by "10 blocks", full tens frame, numeral 10, 5 + 5, 15 - 5, one less than 11, my brother's age.4. Count forward to 100, count backwards from 100, and count forward or backward starting at any number between 1 and 100.Grade Level Indicators (2)7. Model, represent and explain multiplication as repeated addition, rectangular arrays and skip counting.Grade Level Indicators (3)8. Model, represent and explain multiplication; e.g., repeated addition, skip counting, rectangular arrays and area model. For example: a. Use conventional mathematical symbols to write equations for word problems involving multiplication. b. Understand that, unlike addition and subtraction, the factors in multiplication and division may have different units; e.g., 3 boxes of 5 cookies each.11. Model and use the commutative and associative properties for addition and multiplication.