# Katy Independent School District

## Keiko Davidson Elementary

• Keiko Davidson Elementary
• Math Instructional Videos

# ​​​​​​​​​​​​​​​​​​​​​​​Math Instructional Videos

Kindergarten

​​The Progression of
Early Number & Counting

Created by:
Graham Fletcher

 ​​Helping Your Kindergartner Build Number Combinations​Mrs. Lorenzo shares strat​​egies such as using a Reke​nrek (​math rack) and a Tens Frame to help your child build concrete number combinations.  Then your child can turn the combinations into addition number sentences. ​Generating Number Combinations​Mrs. Nochlin shares the "Bears in a Cave" activity we use with our kinder students to practice generating number combinations and finding the missing addend in a number sentence.​ ​SubitizingIn this video Mrs. Zanghi and Mrs. Olson explain what "subitizing" is and how you can work with your child at home on identifying a dot pattern quickly instead of counting one by one.​ ​ ​ ​ ​

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 ​C​​r​eating an Open Number Line to Solve Addition and Subtraction Problems​In this video, Mrs. Tang sh​​ares how students can draw an open n​umber line to model and solve addition and subtraction problems.  Students can make forward jumps when adding and backward jumps when subtracting using the number line.​ ​Addition Using a Double Ten-FrameHelp your child concretely see how making a ten can help them solve addition problems with ease.  Ms. Styles demonstrates using a double tens-frame to find the sum of 8 and 5.  This strategy supports mental math development.​ ​Decomposing Numbers in Multiple WaysMrs. Trevino explains how to break apart (decompose) numbers by adding the value of each digit in the number.  She shares the importance of decomposing in multiple ways to support place value understanding and the realization that numbers are flexible.​
 ​​Addition Problem Solving Strategies​Mrs. Jousan models solving a first grade word problem using multiple strategies including strip diagrams, ten frames, and a number line.​ ​Subtraction Problem SolvingMrs. Jousan models solving a subtraction word problem using a strip diagram to show how we can find a missing part if we know one part and the whole.  She also relates addition to subtraction when using a model to solve.​ Subtraction Problem Solving StrategiesFirst grade teachers, Mrs. Mitric and Mrs. Lutz, demonstrate strategies students can use to model subtraction problem solving. These include drawing a picture, using a ten frame, using an open number line, and using a number bond to help them solve a story problem. ​ ​ ​

 ​​​​Adding and Subtraction on an Open Number Line​Mrs. Cowan and​ Mrs. Satterwhite explain how students can add and subtract on an open number line.​​ ​Multiple Ways of Representing a Number ​In this video Mrs. Hernandez explains how students represent numbers in multiple ways including standard form, word form, expanded form, decomposing, and pictorial representation.​ ​Identifying Patterns on a Number Line​Mrs. Cowan and Mrs. Satterwhite explain how students can find the pattern or rule of what a number line is counting by in order to find a missing number.​​ ` ​
 ​​Finding a Missing Point on a Number LineMrs. Satterwhite and Mrs. Cowan share a simple strategy on using "neighboring numbers" on a number line to identify the pattern.  Students can then apply the pattern to find a missing point on the number line.​​ ​Problem Solving Using Bar Models​In this video Mrs. Hernandez explains the model method problem solving approach we use at Davidson Elementary that includes drawing a bar model to solve the problem.​​ ​Addition Problem Solving Using Model MathIn this video, Mrs. Jousan models the step by step problem solving approach based on the Singapore Model Math involving addition.  This is aligned to the Second Grade TEKs.
 ​Subtraction Problem Solving Using Model Math​In this video, Mrs. Jousan models the step by step problem solving approach based on the Singapore Model Math involving addition.  This is aligned to the Second Grade TEKs.​​​​ Identifying Patterns on a Number Line ​Mrs. Cowan and Mrs. Satterwhite explain how students can add and subtract on an open number line. ​Adding and Subtraction on an Open Number Line ​Mrs. Cowan and Mrs. Satterwhite explain how students can add and subtract on an open number line. ​ ​
 ​​​Decomposing Numbers in Multiple Ways Mrs. Garcia and Mrs. Trivino share ways that students can decompose and rename numbers in different ways to support the understanding that numbers are flexible. ​Subtracting Across Zeroes Mrs. Cowan and Mrs. Garcia demonstrate how we use algorithms to teach students to subtract across zeroes.​ Measuring With a Ruler Not Starting at Zero (Broken Ruler) Mrs. Cowan models 3 strategies for finding the length of an object when you have a broken ruler or the ruler does not start at zero. ​​ ​ ​​ ​
 ​FASTT Math HelpScreen Cast-O-Matic describing  what should be done if you receive an  error message when trying to use Fastt Math on your iPad.The district now has a parent technology help form for when students have trouble logging in to district programs at home.  Parents access through the link below. https://katyisd.instructure.com/courses/82971 ​ ​​ ​ ​ ​

 ​​Addition Problem Solving Using Model Math​Mrs. Jousan uses the Singapore Model Math Approach to Problem Solving to model solving a grade 3 addition problem situation.​​ ​​Multiple Step Problem Solving Using Singapore Model MathMrs. Jousan takes 3rd graders through the Singapore Model Method Approach to Problem Solving involving multiple steps to find the answer.​​ ​Number TalksMrs. Barnes facilitates a number talk with her third grade students to promote mental math and various strategies of how students think through a math problem to solve.  Students identify misconceptions and errors made to find efficient ways to solve math mentally.​ ​
 ​​Using the Area Model to Multiply a 2-digit x 1​-digit NumberMrs. Flynn models how to use the area model to solve a 2-digit by 1-digit to find the product.  This video is appropriate for grades 3 and 4.​ ​All About that Place Value Mrs. Trivino and Mrs. Jousan explain the place value relationship between the ones, tens, hundreds, and thousands in our Base-10 number system.​​ ​FASTT Math HelpScreen Cast-O-Matic describing  what should be done if you receive an  error message when trying to use Fastt Math on your iPad.The district now has a parent technology help form for when students have trouble logging in to district programs at home.  Parents access through the link below. https://katyisd.instructure.com/courses/82971 ​

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 ​​​Using the "Big 7" Strategy for Long DivisionMrs. Flynn models using the "Big 7" strategy for long division.  This strategy is taught before the traditional algorithm to support conceptual understanding.​ ​​Multiplying a 2-digit x 2-digit Using the Area ModelIn this video, Mrs. Chen and Mrs. Flynn team up to teach students how to use the area model to solve a 2-digit by a 2-digit number.​​ ​​Division Using the Area ModelMrs. Hall and Mrs. Williamson share how teaching students to master the TEK 4.4E by solving division problems with the area model supports conceptual understanding that leads to TEK 4.4F where students divide using the standard algorithm.​​ ​

 ​Division with Model ​​Math and the St​andard Algorithm​Mrs. Jousa​n, our math instructional coach discusses the TEKs for 4th grade division and models how to combine the model math approach to problem solving with the standard algorithm​​ to solve a di​vision problem situation. ​Using Models to Determine a Mixed NumberMs. Williamson explains how to use a model to first compose the fraction to create an improper fraction.  Then she demonstrates turning the improper fraction into a mixed number.​​ ​Place Value Relationships​In this video our 4th grade teachers at Davidson Elementary discuss place value relationships including the understanding that the value of each place value position is 10 times the value as the digit to the right and one-tenth the value as the digit to it's left.​​​ ​

 ​​​More with Place Value Relationships​In this video Mrs. Hall demonst​​rates that the place value position to the right is one-tenth the value of the place value position to it's left.​ ​FASTT Math HelpScreen Cast-O-Matic describing  what should be done if you receive an  error message when trying to use Fastt Math on your iPad.The district now has a parent technology help form for when students have trouble logging in to district programs at home.  Parents access through the link below. https://katyisd.instructure.com/courses/82971 ​ ​ ​

 ​​​​Area Problem Solving​Mrs. Ziese guides her students on how to find the area given a problem situation by using the formula area=length x width. ​​ ​​Multiplying a Fraction by a Whole NumberMrs. Jousan demonstrates how to multiply a fraction by a whole number by drawing a model.​ ​​Using the Area Model to DivideIn this video, Mrs. Lauren Flynn models how to divide a three-digit number by a 2-digit divisor using the area model.  She scaffolds this approach by decomposing the divisor for students who are not fluent with fact fluency beyond 12's.​​ ​ ​ ​
 ​​More on Using Area Model to Divide​​​Mrs. Flynn models another example on how to divide a three-digit number by a 2-digit divisor using the area model.  She scaffolds this approach by decomposing the divisor for students who are not fluent with fact fluency beyond 12's.​​​ ​Multiplying Decimals Using a ModelMrs. Jousan​ shares how we can represent the 5th Grade TEK 5.3D of multiplying decimals using an area model and hundredths grid.​​ ​FASTT Math HelpScreen Cast-O-Matic describing  what should be done if you receive an  error message when trying to use Fastt Math on your iPad.The district now has a parent technology help form for when students have trouble logging in to district programs at home.  Parents access through the link below. https://katyisd.instructure.com/courses/82971​ ​ ​​

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