Decimals - Tenths on a Number Line - Presentation

In a comprehensive lesson about decimals, specifically focusing on tenths, students are tasked with understanding and representing these decimals on a number line. The lesson begins with a discussion on how many equal parts are needed to represent tenths between 0 and 1 on the number line. The students then move on to activities where they are required to place given decimals, such as 0.5, 0.9, and 1.1, correctly on the number line, thereby visually grasping the concept of tenths and how they are spaced between whole numbers.

Further activities challenge students to complete number lines with missing tenths, ranging from simple sequences like 4 to 5 with decimals such as 4.2 and 4.4, to more complex ones including numbers like 5.9, 6.5, and 7.4. The lesson also incorporates practical applications, asking students to measure lengths such as a ribbon or a hat using the number line and record their answers in metres as decimals. To deepen their understanding, students are encouraged to reason and explain their thinking, for example, by determining possible start and end numbers on a number line when given a midpoint like 5.4. The lesson culminates with independent work where students apply their knowledge to place decimals on a number line and solve problems involving measurement and conversion, such as converting 0.1 metres to millimetres.