Year 2 - Number and Algebra
Standard 2.OA.1.1 - Practice solving addition sentences to make a specific number up to 10.
Included Skills: Addition, Number Properties
Number and place value • Investigate number sequences, initially those increasing and decreasing by twos, threes, fives and tens from any starting point, then moving to other sequences - developing fluency and confidence with numbers and calculations by saying number sequences - recognising patterns in number sequences, such as adding 10 always results in the same final digit • Recognise, model, represent and order numbers to at least 1000 - recognising there are different ways of representing numbers and identifying patterns going beyond 100 - developing fluency with writing numbers in meaningful contexts • Group, partition and rearrange collections up to 1000 in hundreds, tens and ones to facilitate more efficient counting - using an abacus to model and represent numbers - understanding three-digit numbers as comprised of hundreds, tens and ones/units - demonstrating and using models such as linking blocks, sticks in bundles, place-value blocks and Aboriginal bead strings and explaining reasoning • Explore the connection between addition and subtraction - becoming fluent with partitioning numbers to understand the connection between addition and subtraction - using counting on to identify the missing element in an additive problem • Solve simple addition and subtraction problems using a range of efficient mental and written strategies - becoming fluent with a range of mental strategies for addition and subtraction problems, such as commutativity for addition, building to 10, doubles, 10 facts and adding 10 - modelling and representing simple additive situations using materials such as 10 frames, 20 frames and empty number lines • Recognise and represent multiplication as repeated addition, groups and arrays - representing array problems with available materials and explaining reasoning - visualising a group of objects as a unit and using this to calculate the number of objects in several identical groups • Recognise and represent division as grouping into equal sets and solve simple problems using these representations - dividing the class or a collection of objects into equal-sized groups - identifying the difference between dividing a set of objects into three equal groups and dividing the same set of objects into groups of three