Prática de Shadowing: Experimental Variables - Aprenda a falar inglês com vídeo

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A student wants to find out whether the amount of light a plant receives affects how tall it grows.
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She sets up three identical potted plants, one in normal sunlight, one under a bright grow lamp,
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and one in a dark cupboard.
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you you Thank you.
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But to get a reliable answer, she needs to design this experiment carefully.
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She needs to understand three types of variables.
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The first is the independent variable.
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This is the one thing she deliberately changes, the cause she's testing.
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Here, that's the amount of light.
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She's testing three levels: normal, Hi and None you An easy way to remember it I change it.
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I for independent, I.
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The second is the dependent variable.
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This is what she measures, the result.
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Here, that's the height of each plant, measured in centimeters after a set number of weeks.
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She doesn't control this value.
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She simply records what happens.
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An easy way to remember, it gives you your data.
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D for dependent, D for data.
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you The third is the controlled variables.
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These are everything else that must stay exactly the same to keep the test fair.
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She uses the same pot size, the same soil, and gives each plant the same amount of water.
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If she gave one plant more water than the others, she wouldn't know whether it was the light or the extra water that caused any difference in growth.
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An easy way to remember: keep it fair.
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Change one thing, measure one thing, keep everything else the same.
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you That's what makes an experiment fair, and that's how scientists find out what really causes what.
📺 Mesmo canal
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Vocabulário e dicas de fala para esta lição

Esta aula de conversação de nível B1 usa o vídeo “Experimental Variables”. As palavras que mais se repetem: plant, variable, fair, amount. Este vídeo tem 25 frases e 272 palavras para praticar shadowing. A fala dura 2:06. O falante mantém um ritmo estável de cerca de 129 palavras por minuto, confortável para o shadowing. 87% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é fácil de acompanhar.

Vocabulário principal deste vídeo

As 13 palavras mais avançadas do vídeo, com pronúncia e significado:

PalavraPronúnciaSignificado
variable adjetivo[ˈvæɹ.i.ə.bl̩]variável
experiment substantivo/ɪkˈspɛɹ.ə.mənt/experimento, experiência
dependent adjetivo/dɪˈpɛndənt/dependente
carefully advérbio/ˈkɛɹf(ə)li/cuidadosamente, cautelosamente
soil substantivo/sɔɪl/solo
pot substantivo/pɑt/pote, panela
reliable adjetivo/ɹɪˈlaɪəbl̩/fiável
identical adjetivo/ɪˈdɛntɪkl̩/idêntico
scientist substantivo/ˈsaɪəntəst/cientista
lamp substantivo/ˈlæ̝mp/luminária, lâmpada
deliberately advérbio/dɪˈlɪb.(ə.)ɹət.li/deliberadamente
sunlight substantivo/ˈsʌnˌlaɪt/luz do sol
cupboard substantivo/ˈkʌb.əd/armário

Phrasal verbs que você vai ouvir

PalavraPronúnciaSignificado
find out verbodescobrir
set up verbo/ˌsɛt ˈʌp/preparar

Pronúncia para ficar de olho

  • Palavras longas — acerte a sílaba tônica: experiment /ɪkˈspɛɹ.ə.mənt/, deliberately /dɪˈlɪb.(ə.)ɹət.li/

Sons difíceis para falantes de português:

  • Consoante final — sem acrescentar um “i” depois: experiment /ɪkˈspɛɹ.ə.mənt/, dependent /dɪˈpɛndənt/, pot /pɑt/, scientist /ˈsaɪəntəst/, lamp /ˈlæ̝mp/

Como praticar com este vídeo

  1. Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
  2. Faça shadowing frase por frase na velocidade normal, repetindo cada uma até o seu ritmo ficar igual ao do falante.
  3. Grave a sua voz e compare com o original, prestando atenção a palavras como variable, experiment, dependent.

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

Técnica de shadowing: leia o guia completo passo a passo →