適合年齡

8歲左右

繪本簡(jiǎn)介

Nature is dazzling in the fall season with its colorful array of leaves. Why Do Leaves Change Color? explains the science behind this amazing transformation. Lovely photographs emphasize the beauty of trees and their foliage, and illustrations help clarify the scientific concepts. In addition to teaching students about plants and photosynthesis, this book also gives them the opportunity to study cause and effect and prepositions. Book and lesson are also available at Levels G and M.

秋天的大自然以其五顏六色的樹(shù)葉而令人眼花繚亂。 為什么葉子會(huì)變色? 解釋了這一驚人轉(zhuǎn)變背后的科學(xué)。 可愛(ài)的照片強(qiáng)調(diào)樹(shù)木及其樹(shù)葉的美麗，插圖有助于闡明科學(xué)概念。 除了向?qū)W生教授植物和光合作用知識(shí)外，本書(shū)還為他們提供了研究因果關(guān)系和介詞的機(jī)會(huì)。 G 級(jí)和 M 級(jí)也提供書(shū)本和課程。

繪本節(jié)選

Why are leaves on trees different colors? What makes them change color

Leaves make food for the tree from sunlight, water, and air.

Green stuff in the leaves helps them make food. It also makes the leaves green.

Leaves are green in summer because they are making food. The tree saves some of the food for winter.

In fall, the weather changes.

The days get shorter, and the nights get longer.

Trees get l ess sunlight, so they make less food.

The leaves stop making the green color.

Other colors that were under the green start to show.

Leaves turn yellow, orange, brown, and red

Trees drop their leaves to get ready for winter.

They use the food they saved to get through the cold days and nights.

Spring comes. Ice and snow melt, and rain falls.

The Sun shines. New leaves grow on the trees.

The green leaves start making food again.

中文翻譯：

為什么樹(shù)上的葉子顏色不同?是什么使它們變色

樹(shù)葉通過(guò)陽(yáng)光、水和空氣為樹(shù)木提供食物。

葉子中的綠色物質(zhì)幫助它們制造食物。它還能使樹(shù)葉變綠。

樹(shù)葉在夏天是綠色的，因?yàn)樗鼈冊(cè)谧鍪澄?。這棵樹(shù)為冬天保存了一些食物。

秋天，天氣變了。

白天變短了，夜晚變長(zhǎng)了。

樹(shù)木獲得的陽(yáng)光較少，所以它們制造的食物較少。

樹(shù)葉不再變成綠色。

綠色下面的其他顏色開(kāi)始顯示。

樹(shù)葉變成黃色、橙色、棕色和紅色

樹(shù)木落葉準(zhǔn)備過(guò)冬。

他們用節(jié)省下來(lái)的食物度過(guò)寒冷的白天和黑夜。

春天來(lái)了。冰雪融化，雨水降落。

陽(yáng)光燦爛。樹(shù)上長(zhǎng)出了新葉子。

綠葉又開(kāi)始制造食物了。