Lesson Plan

探索动物后代与其父母的相似程度

01_01_03-CN

Learning Outcomes

说明后代与父母的相似程度。

Higher: 我能指出“不同种群”的亲代所生的后代会长成什么样子
Middle: 我能确认孩子遗传到的特征。
Lower: 我知道后代拥有父母双方的特征。

Activities

入门任务 - 参与

Method:

询问孩子关于鸟窝的问题。为什么它们认为远离地面很重要?孩子们应该知道它们这么做是为了不被其他动物吃掉或被人类打扰。

Resources:

演示文稿 - 入门幻灯片。

故事 - 探索与解释

Method:

在演示过程中回答问题并参加活动。在这些相关幻灯片上停止演示:与伙伴讨论、AfL、歌曲。在“关键字/火箭词”幻灯片之后,参加“集体回答问题”活动(请参阅“评估”部分)。

Resources:

演示文稿

任务专家 - 解释

Method:

训犬师艾莉森•伯恩斯解释杂交犬如何从父母双方遗传特性。

Resources:

演示文稿 - 专家影片。

任务分配 - 详细说明

Method:

选项 1:怪物繁殖 孩子们使用题纸画出他们认为怪物“妈妈”和怪物“爸爸”后代的样子。 向孩子们解释他们应当包含怪物“妈妈”“爸爸”的的所有特征,但不需要包含所有特征。 要为他们提供挑战,第二页中指定在怪物宝宝设计中必须包含的特定特征。 选项 2:建造鸟窝 观看任务分配影片,帮助你了解如何使用教室中或学校花园中的材料建造鸟窝。

Resources:

怪物繁殖 题纸 建造鸟窝 树枝 树叶 稻草 绳子等。

任务日志 - 评估

Method:

测验 演示结束时,孩子们与讨论伙伴一起接受测验并回答问题。

Resources:

演示中的测验 形成性评估表 评估盘 互动测验

Assessment

Questions to Ask During the Lesson

How baby animals similar to their parents?
What happens when different dogs breed?

Mark Allocation

N/A

Choral Response Questions/ Phrase Suggestions

婴儿来自… 妈妈和爸爸。

Teacher Mastery

The Science Behind the Science
Offspring look like their parents due to genetics. Egg cells from the mother and sperm cells from the father (known as gametes) both contain half of the parent's DNA. This means that each gamete has 23 chromosomes. When the sperm cell fertilises the egg cell, the two halves come together to make a complete set of 46 chromosomes. Offspring may not always look half like the mother and half like the father, though.

A monk named Gregor Mendel did a series of experiments with peas to investigate this phenomenon. He discovered that some genes are dominant, and some genes are recessive. Dominant genes are more likely to show in the offspring than recessive genes, but if two parents have the same trait in a recessive gene, it becomes more likely to show in the offspring. Recessive genes are often the ones that appear to 'skip' generations. 

Curriculum Fields

National Curriculum

Describe and compare the structure and needs of a variety of common animals (fish, amphibians, reptiles, birds and mammals, including pets).

International Baccalaureate

The study of the characteristics, systems, and behaviours of humans and other animals, and of plants; the interactions and relationships between and among them, and with the environment.

Enquiry Skills and Approaches

Grouping and classifying.

Working Scientifically Skills

Gathering and recording data to help in answering questions.

CBSE

Grade 2 - Animal Life

Chinese Compulsory Education Primary School Science

了解你身边常见的动植物并能简要说明它们的外在特征。