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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   The oldest known multiplication tables were used by the Babylonians about 4000 years ago. [2] However, they used a base of 60. [2] The oldest known tables using a base of 10 are the Chinese decimal multiplication table on bamboo strips dating to about 305 BC, during China's Warring States period. [2] "Table of Pythagoras" on Napier's bones [3]

3. 30 by 30 - Wikipedia

   en.wikipedia.org/wiki/30_by_30

   30 by 30 (or 30x30) is a worldwide initiative for governments to designate 30% of Earth's land and ocean area as protected areas by 2030. [1] [2] The target was proposed by a 2019 article in Science Advances, "A Global Deal for Nature: Guiding principles, milestones, and targets", highlighting the need for expanded nature conservation efforts to mitigate climate change.

4. Multiplication algorithm - Wikipedia

   en.wikipedia.org/wiki/Multiplication_algorithm

   A multiplication algorithm is an algorithm (or method) to multiply two numbers. Depending on the size of the numbers, different algorithms are more efficient than others. Numerous algorithms are known and there has been much research into the topic. The oldest and simplest method, known since antiquity as long multiplication or grade-school ...

5. Fourth grade - Wikipedia

   en.wikipedia.org/wiki/Fourth_grade

   In India, where children enter Class 4 at the ages 9 to 10 it is called Lower Primary, it is known as the fourth grade. 5-7 standard categories as Upper Primary (UP) . Lower Primary gives the basic education necessary for a kid and when they get to the UP section , advanced knowledge will be provided via lessons or modules .

6. Mathematics education in the United States - Wikipedia

   en.wikipedia.org/wiki/Mathematics_education_in...

   e. Mathematics education in the United States varies considerably from one state to the next, and even within a single state. However, with the adoption of the Common Core Standards in most states and the District of Columbia beginning in 2010, mathematics content across the country has moved into closer agreement for each grade level.

7. Vet’s Joke About How Dogs vs. Cats Act When They Do ... - AOL

   www.aol.com/lifestyle/vet-joke-dogs-vs-cats...

   He posted this video at the beginning of October about how different dogs and cats act when they've done something wrong, and it is spot on! I literally laughed out loud when Dr. Anwary pretended ...