Sandra Trotman Grades 3 – 5 Trainer Notes 1 Title of Event: Computation - Adding and Subtracting Decimals Block: 33 Description: This course will incorporate strategies for effective identification, utilization, and implementation of the NGSSS for Broward teachers. The primary focus will be on the providing content and instructional strategies for teachers to present adding and subtracting decimals. Delivery Method: Varied: Face-to-Face, large and small group discussion, modeling, student presentations, cooperative learning activities, and varied media exposure Target Audience: Grades 3 – 5 teachers Session Duration: Session _3___ of _3_ (6 hour training) Prerequisites: Module1 1 & 2 Specific Objectives: By the end of this module, participants will: 1. Describe activities that may be used to develop decimals vocabulary power. 2. Demonstrate understanding of the connection between fractions, and decimals by using prior knowledge of dollars and cents. 3. Compare fractions/ decimals and percents using different models of representation. 4. Examine common errors/difficulties encountered by students when adding and subtracting decimals. 5. Identify effective strategies for teaching addition and subtraction of decimals with like and unlike denominators using models, place value, and games. 6. Identify teacher-specific instructional tools and methods for teaching addition and subtraction of decimal. 7. Explore web-based educational resources designed to reinforce learning of writing and relating decimals to common fractions and percents. Benchmark: MA.4.A.2.1 Use decimals through the thousandths place to name numbers between whole numbers. MA.4.A.2.4 Compare and order decimals, and estimate fraction and decimal amounts in real-world problems. MA.5.A.2.1: Represent addition and subtraction of decimals and fractions with like and unlike denominators using models, place value, or properties. MA.5.A.2.2: Add and subtract fractions and decimals fluently, and verify the reasonableness of results, including in problem situations MA.5.A.2.3: Make reasonable estimates of fraction and decimal sums and differences, and use techniques for rounding Sandra Trotman Grades 3 – 5 Trainer Notes 2 Time Content Process/ Participant Materials/ Frame Product Evaluation Resources Duration Course Outline Script for each Content Area Assessment of Training Materials for Activities Of Activity) Specific Objectives 5 minutes Welcome Welcome participants, review objectives, and N/A PowerPoint Slides 47 - 49 ground rules. 20 minutes Review pre- Activity 1. Addition of whole numbers with & Participants will PowerPoint Slides 50(1) requisite skills without regrouping be able to Instructor reviews addition of whole numbers, explain why Addition of fraction error pattern - addition and with and without regrouping, by beginning with a developing (Activity Sheet) subtraction of discussion on the need to develop competency in competency in whole addition and subtraction of whole numbers before adding and numbers, teaching decimals. subtracting fractions, place whole numbers values, Participants will review addition and subtraction must be taught regrouping of fractions with and without like denominators before teaching by examining student error patterns, and decimals. describing appropriate remediating instructional activities. 15 minutes Developing Activity 2. Graphic Organizers Participants PowerPoint Slide 52 Math Language Instructor will use a Tree Map or graphic demonstrate (Tree Map Graphic organizer) organizer to review the vocabulary for this understanding section: fractions, decimals, comparing, finding of the equivalents, estimate, adding, subtracting, budget, vocabulary shopping, sums, differences associated with decimals by Activity 3. Word Search/Word Puzzle creating a Word Sandra Trotman Grades 3 – 5 Trainer Notes 3 The instructor will encourage participants to puzzle or Word integrate Language Arts and Math by developing search activity a word search or word puzzle activity to reinforce student grasp of the vocabulary. 40 minutes Strategies for Activity 4. Difficulty with presentation/format of Participants will PowerPoint Slides 53 - 56 teaching decimal solve problems ( Balancing your Bank Account) addition and The instructor will present an example of a using a list, subtraction of problem/difficulty student encounter when adding table, chart decimals or subtracting decimals; when values are and/or presented horizontally or as a story and the manipulative - Estimation decimals are expressed with varying decimal materials - Make a table places (e.g., 5. 12 + 49. 635). Reinforce estimation skills. Activity 5. Make a Table: Add and Subtract Computer access for participants Money NLVM: Base Block Decimals “How can making a table help you organize and http://nlvm.usu.edu/en/nav/fram keep a track of your bank account balance?” es_asid_264_g_2_t_1.html?from Participants will examine ways in which students =grade_g_2.html may actively participate in developing a better understanding of the concepts. Role playing/money Activity 6. Manipulative materials (Base 10 blocks, 10s and 100s grids)/Interactive activities Working with manipulative materials to develop understanding of addition and subtraction of decimals Participants will explore the use of Base 10 blocks. (NLVM) 30 minutes Problem Activity 7. Problem of the day Participants PowerPoint Slides 57 - 60 Sandra Trotman Grades 3 – 5 Trainer Notes 4 Solving The instructor poses the problem of the day, a select a method (Track Event) track event. Have participants describe how they to add or will assist students in unlocking the problem in subtract decimal Activity worksheet: Selecting a order to solve it. problems, and method Discuss with participants how they can use the discuss the commutative and associative properties of reasonableness Paper, pencil, work mat, base 10 addition, and the importance of aligning place of their blocks, calculators, values when adding or subtracting decimals. selection Activity 8. Adding and subtracting decimals to thousandths. Participants will be presented with a student’s work sample on addition and subtraction of decimals. They will identify the error pattern and describe how they will help students overcome such problems. They will include the use of manipulative materials/technology in the Selecting a remediation plan. method Mental math, Activity 9. Selecting a method calculator, or Activity sheet: Selecting a method: mental, paper and calculator, paper and pen. Participants select a pencil to add method for each problem and explain the and subtract reasonableness of their selection. decimals 10 minutes Review content Review content: Individuals present highlights of PowerPoint Slide 61 the session Diagnostic Test Evaluation Survey Participants complete 10 Item Diagnostic Test and Evaluation survey.