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Ministerio de Educación (Spain)
Ministerio De Educacion: Conecto Con Las Mates
These are five interactive units for Elementary math. Each unit is structured in four parts: explanation, activities, dictionary and assessment.
AAA Math
Aaa Math: Mentally Adding Two Digit Numbers
This site explains how to mentally add two-digit numbers. Gives exercises and games to practice this skill.
AAA Math
Aaa Math: Adding Money Amounts
Explains how to add money. Gives exercises and games to practice this skill.
Other
Mathpower: Elementary Algebra Assignments
Test your algebra aptitude at this colorful website filled with algebra assignments for upper elementary and middle school students. Assignments explore algebra concepts using addition, subtraction, multiplication, fractions, division,...
abcteach
Abcteach: Teach: Decimals
[Free Registration/Login Required] Educators can generate worksheets for primary or elementary grades that focus on decimal addition, subtraction and fraction practice. Worksheets include graphics and answer key.
Organization for Community Networks
Lesson Plan: I've Got Your Number (Number Sense)
An engaging lesson used to review math concepts and facts. Students are certain to "Stay alert," in this card game where each solution is related to the next solution. Sample questions provided. Great problem solving and skill building...
US Department of Education
National Center for Education Statistics: Nces Classroom
Just what is the NCES Students' Classroom? In addition to many useful features, this site provides math and statistical activities tailored to a middle and elementary school students.