I agree that Y, but we must also take into account that. Some of them are a fact, but some of them also agree. The evidence I have seen suggests something else. 26 strains of sentences for higher-level conversations in the classroom The evidence for Z is overwhelming, considering that. It is sometimes argued that these kinds of conversations favour students who have the confidence to express themselves verbally, and this is difficult to argue. But remember that academic writing prefers gifted writers, traditional tests prefer those who feel comfortable proving what they know, learning through technology favors students with a more diverse history of using technology and so on. Note: You can buy a similar version of these rods on printable cards, if you find it useful. The author`s claim that Z is interesting because. . . .