<Table> <Tr> <Td> </Td> <Td> This article may require cleanup to meet Wikipedia's quality standards . The specific problem is: Very messy . Please help improve this article if you can . (April 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article may require cleanup to meet Wikipedia's quality standards . The specific problem is: Very messy . Please help improve this article if you can . (April 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Third grade (called Year 4 in the UK) is the fourth year of primary education in most countries . It is the third school year of primary school . Students are usually 8--9 years old, depending on when their birthday occurs . In some school districts, it is the final year of elementary school . </P> <Ul> <Li> In math, students are usually introduced to multiplication and division facts, place value to thousands or ten thousands, and estimation . Depending on the school, students may even begin to work on long division . Decimals (to tenths only) are sometimes introduced . Students begin to work on problem - solving skills working to explain their thinking in mathematical terms . </Li> <Li> In science, third graders are taught basic physical sciences and chemistry . Weather and climate are also taught . The concept of atoms and molecules are common, the states of matter, and energy, along with basic elements such as oxygen, hydrogen, gold, zinc, and iron . Nutrition is also taught in third grade along with chemistry . </Li> <Li> Social studies begin a study of the culture of the United States and basic idea of the early part of the United States from the time of Native Americans to the Civil War . Outward expansion and the gold rush is covered . </Li> <Li> In reading, third grade students begin working more on text comprehension than decoding strategies . Students also begin reading harder chapter books . They read and distinguish between a variety of genres: realistic fiction, non-fiction, poetry, fantasy, historical fiction, science fiction and folktales . </Li> </Ul>

What is grade 3 equivalent to in the uk