PBS offers a brief background on the Electronic Numerical Integrator and Computer (ENIAC), originally published by ScienCentral, Inc., and the American Institute of Physics.
Practice adding and subtracting within one hundred with these multiple-choice problems.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Practice adding and subtracting within one hundred with these multiple-choice problems.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
An extensive selection of teacher resources to aide in teaching and reviewing addition and subtraction of two and three digit numbers, inverse operations, counting on, and other mental strategies for addition and subtraction. Resources include worksheets, flash activities, powerpoint presentation, smartboard activities, and Word, Excel, and pdf files for the teacher's use.
Psychology is designed to meet scope and sequence requirements for the single-semester introduction to psychology course. The book offers a comprehensive treatment of core concepts, grounded in both classic studies and current and emerging research. The text also includes coverage of the DSM-5 in examinations of psychological disorders. Psychology incorporates discussions that reflect the diversity within the discipline, as well as the diversity of cultures and communities across the globe.Senior Contributing AuthorsRose M. Spielman, Formerly of Quinnipiac UniversityContributing AuthorsKathryn Dumper, Bainbridge State CollegeWilliam Jenkins, Mercer UniversityArlene Lacombe, Saint Joseph's UniversityMarilyn Lovett, Livingstone CollegeMarion Perlmutter, University of Michigan
By the end of this section, you will be able to:
Describe the nature and symptoms of attention deficit/hyperactivity disorder and autism spectrum disorder
Discuss the prevalence and factors that contribute to the development of these disorders
Demonstrates how to use repeated addition to count how many haircuts Rafael gets in one year. [2:09]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Skittles - yum!! You will instantly have your student's attention when you teach about arrays using Skittles. This detailed lesson walks you through the steps, provides worksheets for varying math levels, and includes a video of the lesson in action.
Listen to Sloppy Pop sing about words ending in -op. It gets rather messy as they slop around in a pool filled with glop while a cop stands nearby! [1:53]
When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding, subtracting, and multiplying (but not dividing!). [4:41]
Demonstrates how to add two 2-digit numbers, with no regrouping, using drawings of base ten cubes to represent 1s and 10s. [3:16]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Find a quick, concise explanation of how to add and subtract with negatives. Step by step examples are included to help you understand how to find the sum or difference when negative numbers are involved.
Learn how to work problems using the commutative property of addition. [4:00]
Demonstrates how to add two mixed numbers, where the fractions have the same denominator, by adding the whole numbers and then the fractions. [5:23]
This tutorial explains how to combine a positive and a negative number with a number line. [4:52]
Follow along with this tutorial to get some practice adding and subtracting matrices using decimals and fractions. [4:42]
Teach a lesson about repeated addition and arrays by using this very detailed lesson plan. The author walks you through the lesson step-by-step and even includes a video of her teaching about arrays for reference. Word problem worksheets are provided as a resource.