History ChekhovsClassroom / AnimeAndManga

%%* In ''Manga/{{Naruto}}'', they basically train to become a ninja. Subverted for Naruto, who learns everything from training and being the protagonist. Also, Sakura plays this trope straight during the Chunin exams.%%Context unclear.
* In the HotSpringsEpisode of ''Anime/NeonGenesisEvangelion'', they use precisely this grating dialogue when they destroy an angel with the help of thermal expansion, which by amazing coincidence, Shinji had been studying that very day.
* Episode 3 of ''Anime/NightWizard'' featured [[RagnarokProofing a millennia-old puzzle]] about the color of a burning metal's flame guarding a CosmicKeystone. No points for guessing what the lecture earlier on in the episode was about.

* An episode of ''Anime/TransformersVictory'' had an early scene of Wingwaver and Dashtacker teaching Jean about levers. Sure enough, later in the episode, he came up with a plan to use a lever to free a trapped human.

* Gon in ''Manga/HunterXHunter'' escapes from a powerful enemy by remembering a lecture on how to swindle [[CrackIsCheaper antiquarians]].
* ''Manga/ACertainScientificRailgun'': During the Level-Upper Arc, Mikoto and Kuroko discuss Synaesthesia, the phenomenon under which a certain sensory stimulus can evoke sensations in a different form, after Kuroko off-handedly comments on wind chimes making her feel cooler, or red evoking the taste of strawberries. Turns out [[spoiler:it's the exact missing link they need in solving the Level-Upper case, and the key to defeating the AIM-Burst]].
* In ''Manga/PokemonAdventures'', Pearl is told by the Fan Club President that in order to prepare for Platinum's first Super Contest performance, each member of the Sinnoh Trio must do one different part. Much later on in the story, when everyone is freaking out over the revelation that Team Galactic is planning to blow up the three lakes, Pearl notices the ribbon that Platinum's Empoleon won and remembers the President's words. He then declares that each of them must go to and protect one different lake, marking the first time in their journey together that the three of them would have to travel alone.
* Early in an episode of ''Anime/{{Kamichu}}'', Yurie is shown reviewing her social studies textbook regarding the role and mission of the [[UsefulNotes/KaijuDefenseForce Japan Self Defense Forces]]. [[spoiler: Later, she uses this information to convince a group of Ground Self Defense Force troops to not interfere with the alien's escape attempt.]]
* ''Manga/{{Dandadan}}'': Before they met the BoxingBattler Gig Worker, there was a lesson about how the mantis shrimp has the strongest punch in nature. When modified by a Serpoian, the boxing Gig Worker gains mantis shrimp properties ([[WeaksauceWeakness though not the shrimp's gills]]).

* Done rather effectively in ''Literature/FullMetalPanic! The Second Raid'', where during a mission briefing one of the SRT members makes a joke about [[spoiler: the Cretans Paradox. When the commanding officers realize that [[TheMole a mole]] is relaying their communications to the enemy, they manage to turn the tables by obliquely referencing the joke, which lets the field teams know to do the exact opposite of what they're ordered thereafter.]]

* Doesn't exactly help the protagonist solve anything, but a plot point is explained this way in ''Manga/TheVisionOfEscaflowne''. Specifically, a class lecture drops off the random tidbit that [[spoiler:Isaac Newton studied gravity blah blah but also in a metaphysical sense]]. Meanwhile the main villain [[spoiler:is revealed to be from Earth, for his true first name to be Isaac, and has created a ton of powerful inventions for Zaibach, including technobabble about the gravity of hearts and such]]. Hmmmmmmmmm.

* Done rather effectively in ''LightNovel/FullMetalPanic! The Second Raid'', where during a mission briefing one of the SRT members makes a joke about [[spoiler: the Cretans Paradox. When the commanding officers realize that [[TheMole a mole]] is relaying their communications to the enemy, they manage to turn the tables by obliquely referencing the joke, which lets the field teams know to do the exact opposite of what they're ordered thereafter.]]

* In ''Manga/{{Naruto}}'', they bascially train to become a ninja. Subverted for Naruto, who learns everything from training and being the protagonist. Also, Sakura plays this trope straight during the Chunin exams.

* Doesn't exactly help the protagonist solve anything, but a plot point is explained this way in ''Manga/TheVisionOfEscaflowne''. Specifically, a class lecture drops off the random tidbit that [[spoiler:Isaac Newtown studied gravity blah blah but also in a metaphysical sense]]. Meanwhile the main villain [[spoiler:is revealed to be from Earth, for his true first name to be Isaac, and has created a ton of powerful inventions for Zaibach, including technobabble about the gravity of hearts and such]]. Hmmmmmmmmm.

* In ''Manga/PokemonSpecial'', Pearl is told by the Fan Club President that in order to prepare for Platinum's first Super Contest performance, each member of the Sinnoh Trio must do one different part. Much later on in the story, when everyone is freaking out over the revelation that Team Galactic is planning to blow up the three lakes, Pearl notices the ribbon that Platinum's Empoleon won and remembers the President's words. He then declares that each of them must go to and protect one different lake, marking the first time in their journey together that the three of them would have to travel alone.

* Early in an episode of [[http://tvtropes.org/pmwiki/pmwiki.php/Anime/Kamichu Kamichu!]], Yurie is shown reviewing her social studies textbook regarding the role and mission of the [[UsefulNotes/KaijuDefenseForce Japan Self Defense Forces]]. [[spoiler: Later, she uses this information to convince a group of Ground Self Defense Force troops to not interfere with the alien's escape attempt.]]

* Early in an episode of [[http://tvtropes.org/pmwiki/pmwiki.php/Anime/Kamichu Kamichu!]], Yurie is shown reviewing her social studies textbook regarding the role and mission of the [[KaijuDefenseForce Japan Self Defense Forces]]. [[spoiler: Later, she uses this information to convince a group of Ground Self Defense Force troops to not interfere with the alien's escape attempt.]]

** Worth it for the line "[[DoubleEntendre Thermal expansion... how embarrassing]]", though.
*** The example used by Asuka was pretty sweet, too.

* ''Anime/{{Pokemon}}'': the actual lecture is not shown on-screen, but the only reason Ash et. al could get out safely from the S.S. Anne disaster is that Misty studied the ship's layout for a class project.
** It's not related to my knowledge ''why'' she built the model but that might just be my faulty memory.

* ''Manga/ACertainScientificRailgun'': During the Level-Upper Arc, Misaka and Kuroko discuss Synaesthesia, the phenomenon under which a certain sensory stimulus can evoke sensations in a different form, after Kuroko off-handedly comments on wind chimes making her feel cooler, or red evoking the taste of strawberries. Turns out [[spoiler:it's the exact missing link they need in solving the Level-Upper case, and the key to defeating the AIM-Burst]].

* Early in an episode of [[Anime/Kamichu Kamichu!]], Yurie is shown reviewing her social studies textbook regarding the role and mission of the [[Kaiju Defense Force Japan Self Defense Forces]]. [[spoiler: Later, she uses this information to convince a group of Ground Self Defense Force troops to not interfere with the alien's escape attempt.]]

* Early in an episode of [[Kamichu Kamichu!]], Yurie is shown reviewing her social studies textbook regarding the role and mission of the [[Kaiju Defense Force Japan Self Defense Forces]]. [[spolier: Later, she uses this information to convince a group of Ground Self Defense Force troops to not interfere with the alien's escape attempt.]]

* Episode 3 of ''Anime/NightWizard'' featured [[RagnarokProofing a millenia-old puzzle]] about the color of a burning metal's flame guarding a CosmicKeystone. No points for guessing what the lecture earlier on in the episode was about.

* ''ACertainScientificRailgun'': During the Level-Upper Arc, Misaka and Kuroko discuss Synaesthesia, the phenomenon under which a certain sensory stimulus can evoke sensations in a different form, after Kuroko off-handedly comments on wind chimes making her feel cooler, or red evoking the taste of strawberries. Turns out [[spoiler:it's the exact missing link they need in solving the Level-Upper case, and the key to defeating the AIM-Burst]].

* An episode of ''Anime/TransformersVictory'' had an early scene of Wingraver and Dashtacker teaching Jean about levers. Sure enough, later in the episode, he came up with a plan to use a lever to free a trapped human.