Place value - Counting in Powers of 10 - Presentation

The presentation on counting in powers of 10 is an educational resource aimed at enhancing students' understanding of place value. In the first activity, students are challenged to complete a numerical sequence by applying a rule related to place value. The sequence provided starts with an empty slot followed by numbers such as 12, 32, and 52, leading up to 82. The task is to discover the missing numbers by understanding the underlying pattern of the sequence, which is governed by the concept of place value. Students are also encouraged to create their own sequences using rules they devise, further reinforcing their grasp of the concept.

Further activities involve identifying and correcting mistakes in given sequences that count in increments of powers of 10, such as 10s, 100s, and 1,000s. For example, students must spot errors in sequences where a number is out of place, such as 12,639 instead of 12,638, and correct it based on the pattern of counting by tens. Another task includes using a Gattegno chart to visualise and manipulate numbers by adding or subtracting powers of ten to reach a target number. The presentation also prompts students to reason and discuss various aspects of place value, such as the effects of moving into negative numbers and the patterns observed when sequences increase or decrease by different powers of 10. The aim is to develop a deep understanding of the number system and the significance of place value in counting and number sequences.