# Standards-Based Second Grade: Unit 3

## Addition and Subtraction Within 1,200 and Multiplication Introduction

TM2039W

Being victorious is always a self-image builder. It makes us more willing to try new things, be brave, and expect to succeed. That’s exactly what we do at TouchMath — give you the materials to help your students face the most challenging of school subjects, and triumph. The final second grade computation unit completes the standards for strategies, properties, and relationships in second grade addition and subtraction skills. It then introduces multiplication through reviewing odd and even numbers, reviewing repeated addition, introducing skip counting, and demonstrating the association between addition and multiplication. Activities include an emphasis on concrete and pictorial problems, and TouchMath techniques with visual cues that ensure proficiency.

#### Explore Standards-Based Second Grade: Unit 3

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### Unit 3 Details:

• A brand-new day-by-day C-R-A directed Teacher's Manual makes step-by-step multi-sensory teaching easy.
• Pre- and Posttests for each module measure successes.
• 150 teacher/student approved activity masters engage all learners.
• Six complete modules divided by easy topics.
• Technology: Access to TouchMath Downloadable Green Editions — More Info

### Module Details:

• Module 1: Addition and Subtraction in Multiples of 10 and 100
• The activities in this module are scaffolded from adding and subtracting multiples of 10 to/from 100 and then to/from each multiple of 100 in sequence. Skills are extended to adding and subtracting multiples of 10 within a three-digit number that is also a multiple of 10 (e.g., 540 + 40 and 580 - 40). The instruction then progresses to adding multiples of 10 to all three-digit numbers without regrouping (e.g., 649 + 30 and 679 - 30). The same process is used for adding and subtracting multiples of 100. Computation strategies (including doubles and number families) are reinforced, in/out tables provide practice in a variety of formats, and visual cues and word problems assist students throughout the activities.
• Module 2: Addition Within 1,000
• This module extends addition with regrouping to sums within 1,000. It reviews and extends the concept of regrouping presented in Unit 2. The instruction is again scaffolded from the kinesthetic, to the kinesthetic/pictorial and to the pictorial level to ensure students work through the process in a meaningful way. The cluster uses base ten blocks, place value mats, and ten frames to ensure development of the concept. Place value charts relate to the models. The representational level is scaffolded from the models to visual cues as reminders of the steps in the process. Comparisons and word problems increase the value of the skill to the learners. It provides practice applying the skill with three-digit numbers. All visual cues have been eliminated now. The focus is on developing proficiency with the algorithm. The mixed practice includes three-digit addends with one-digit, two-digit, and three-digit addends. Unknowns and multiple addends continue throughout the practice. The cluster reinforces ordering numbers and relating locations on number lines.
• Module 3: Subtraction Within 1,000
• This module extends subtraction with regrouping within 1,000. The presentation mirrors the previous module, Addition within 1,000. Cluster 1 reviews and extends the concept of regrouping that was presented in Unit 2. The instruction is again scaffolded from the kinesthetic, to the k kinesthetic/representational, and then to the representational level to ensure students work through the process in a meaningful way. The cluster uses base ten blocks and place value mats to ensure development of the concept. Place value charts help students relate to the models. The representational level is scaffolded from the models to visual cues as reminders of the steps in the process. Word problems using previously learned strategies increase the value of the skill to the learners. Cluster 2 provides practice applying the skill with three-digit numbers. All visual cues are eliminated. The mixed practice includes expressions without and with regrouping. The complexity of the expressions is scaffolded from subtracting a one-digit number, then a two-digit number, then a three-digit number, and lastly mixed subtrahends. The cluster includes unknowns, word problems, ordering numbers, and comparisons throughout. Students apply previously learned skills (e.g., subtracting multiples of 10 and 100).
• Module 4: Mixed Operations
• This module provides mixed practice with addition and subtraction without and with regrouping. It reviews and extends computation and problem solving strategies. Cluster 1 provides practice to develop fluency and proficiency with computation with no visual cues. The activities are scaffolded to increase in the number of digits and the complexity of the problems. Word problems foster previously presented problem solving strategies. The cluster emphasizes place value, properties, and the relationship of addition and subtraction throughout. Cluster 2 introduces two new problem solving strategies: work backward and choose an operation. Mixed practice concludes the cluster.
• Module 5: Multiplication 1
• This module introduces multiplication with odd and even numbers, pairs, and equal addends. Cluster 1 reviews even numbers as pairs using pictures of familiar objects. The numbers are presented in sequence, with the basic concept of pairs as partners. The activities move to odd numbers as pairs plus one. Students practice matching and seeing odd and even as numbers in counting order. The idea of even numbers within 15 is extended to include pairs of equal addends. Cluster 2 continues the practice with a focus on equal addends, doubles as a strategy for addition, generalizations about even numbers, and scaffolded application with numbers to 100. Pictures, charts, tables, and sequences of numbers reinforce the skill.
• Module 6: Multiplication 2
• This module uses pictures, Pictorial TouchPoints, regular TouchPoints, numerals, and arrays to extend the introduction of multiplication through 5 x 5. Cluster 1 (activity sheets 126–137) introduces the concept through structured activities for multiplication by 2, 3, 4, and 5 in order. Each factor is first represented with pictures of objects, then Pictorial TouchPoints using those objects, and then regular TouchPoints. Groups of objects, dots in arrays, and TouchPoints are used first for repeated addition and then for multiplication. The traditional TouchMath approach is reinforced throughout the instruction and guided practice. Cluster 2 (activity sheets 138–150) applies the concept in word problems. Students draw pictures to represent the problems and create repeated addition as well as multiplication number sentences that relate to the pictures. TouchPoints help students skip count to find the product. Recognizing and naming multiples are the final steps in building the foundation for multiplication. Cluster 3 (activity sheets 151–159) relates all the strategies from the module. Students’ understanding is reinforced through the commutative property, a generalization about multiplication, inclusion of the factor 1, and dots in arrays. Addition and multiplication equations relate to arrays, and word problems with arrays tie together the various presentations. Pairs with an extra is a reminder of odd numbers.

### Purchasing Options:

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• Green Edition Details

• A downloadable version of Standards-Based Second Grade: Unit 3. Contains the same materials as the physical version, administered through a custom online interface to print and lesson plan with ease — All at a much lower cost!
Click here for more info

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These classroom aids, posters, and manipulatives, provide the perfect complement to the CCSS Second Grade Units. Add any or all of them for more options to differentiate instruction while providing students with an enriching, multisensory learning experience.

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As an added bonus, this unit comes with access to the TouchMath Downloadable Green Edition version -– an online lesson management tool that includes digital/printable versions of ALL the activity sheets and teacher guides contained in the print program. For teachers who prefer less storage requirements and less classroom clutter, don’t forget you can purchase just the digital version of this unit at a significantly lower cost!

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##### TouchMath Apps

While Standards-Based Second Grade Unit 3 covers a wide variety of topics and skills built on the Common Core State Standards and additional state math content standards, including AZ, FL, and TX, and we understand schools and teachers have diverse curriculum needs. Because of that, TouchMath offers this unit in second grade collection options that provide a more extensive set of materials at significant savings. If you’re looking for a more immersive second grade program with extra ways to differentiate instruction, these options create a complete teaching and learning experience by adding additional units, classroom aids, and technology.

SAVE up to \$200 by purchasing the Standards-Based Second Grade Complete Program Downloadable Green Edition

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• Green Edition Details

• A downloadable version of Standards-Based Second Grade: Unit 3. Contains the same materials as the physical version, administered through a custom online interface to print and lesson plan with ease — All at a much lower cost!
Click here for more info

• Options

Add

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• Green Edition Details

• A downloadable version of Standards-Based Second Grade: Unit 3. Contains the same materials as the physical version, administered through a custom online interface to print and lesson plan with ease — All at a much lower cost!
Click here for more info

### Free Teacher Training Program:

Take our interactive training and discover the unique advantages of the TouchMath Program. In just one hour, you will learn the step- by-step process for teaching our multisensory system to students of all abilities and learning styles. Along with the online training videos, we will supply all the materials you need for a hands-on, interactive learning experience – absolutely free and yours to keep. Plus, if you watch the training videos with your colleagues, you'll receive a thank you gift.

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