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2. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   Elementary arithmetic is a branch of mathematics involving addition, subtraction, multiplication, and division. Due to its low level of abstraction , broad range of application, and position as the foundation of all mathematics, elementary arithmetic is generally the first branch of mathematics taught in schools.

3. Investigations in Numbers, Data, and Space - Wikipedia

   en.wikipedia.org/wiki/Investigations_in_Numbers...

   Investigations was developed between 1990 and 1998. It was just one of a number of reform mathematics curricula initially funded by a National Science Foundation grant. The goals of the project raised opposition to the curriculum from critics (both parents and mathematics teachers) who objected to the emphasis on conceptual learning instead of instruction in more recognized specific methods ...

4. Exercise (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Exercise_(mathematics)

   Early exercises deal with addition, subtraction, multiplication, and division of integers. Extensive courses of exercises in school extend such arithmetic to rational numbers. Various approaches to geometry have based exercises on relations of angles, segments, and triangles.

5. Addition - Wikipedia

   en.wikipedia.org/wiki/Addition

   3 + 2 = 5 with apples, a popular choice in textbooks [1] Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. [2] The addition of two whole numbers results in the total amount or sum of those values combined. The example in the ...

6. Doctors Say This Nighttime Behavior Can Be A Sign Of Dementia

   www.aol.com/lifestyle/doctors-nighttime-behavior...

   In addition to the symptoms listed above, sundowning can include verbal or even physical outbursts, Elhelou says. That may mean lashing out when dinner isn’t what they thought it would be or ...

7. No. 4 Penn State stays on playoff track with narrow 26-25 win ...

   www.aol.com/no-4-penn-state-stays-002453828.html

   Tyler Warren had eight receptions for 102 yards for the Nittany Lions (10-1, 7-1 Big Ten, No. 4 CFP), who dodged the upset on an afternoon when three other teams in the projected 12-team playoff ...