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The AAMC also provides free online preparatory material for the MCAT through Khan Academy, including 1,000 free videos and 2,800 review questions including content review and passage-based questions. [38] In 2023, 66.3% of students responded that they used this partner material to prepare for the exam. [39]
Khan Academy is an American non-profit [3] educational organization created in 2006 by Sal Khan. [1] Its goal is to create a set of online tools that help educate students. [4] The organization produces short video lessons. [5] Its website also includes supplementary practice exercises and materials for educators.
As of January 2025, the Khan Academy channel on YouTube has 8.74 million subscribers, and its videos have been viewed more than two billion times. [3] In 2012, Khan was named in the annual publication of Time 100. [4] In the same year, he was featured on the cover of Forbes, with the tagline "The $1 Trillion Opportunity." [5]
The channel launched a preview on December 2, 2011, and as of March 2022, it has accumulated over 16 million subscribers and 1.8 billion video views. [5] The channel launched with John and Hank presenting their respective World History and Biology series; the early history of the channel continued the trend of John and Hank presenting ...
Learning is shown when the rat swims a more direct route to the obscured platform. Small rodents can also be easily conditioned using taste aversion or odor aversion techniques. Performing neurotoxic lesions in these conditioned rodents is an excellent way to study the neural basis of aversion learning and memory. [46]
The use of spaced repetition has been proven to increase the rate of learning. [1] Spaced repetition with forgetting curves. Although the principle is useful in many contexts, spaced repetition is commonly applied in contexts in which a learner must acquire many items and retain them indefinitely in memory.
Miller and Sweatt demonstrated that rats trained in a contextual fear conditioning paradigm had elevated levels of mRNA for DNMT3a and DNMT3b in the hippocampus. [4] Fear conditioning is an associative memory task where a context, like a room, is paired with an aversive stimulus, like a foot shock; animals who have learned the association show higher levels of freezing behavior when exposed to ...
In Morris' first experiment, the apparatus was a large circular pool, 1.30 m across and 0.60 m high. The purpose of the original experiment was to show that spatial learning does not require the presence of local cues, meaning that rats can learn to locate an object without any auditory, visual, or olfactory cues. [15]
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