I See Addition and Subtraction
Addition and subtraction calculations are made visual by I See Maths + -. This iPad app allows educators to create a range of images that help children to understand key calculation concepts.
The Singapore Bar feature allows the 'part-part-whole' structure to be made visible; calculations can be shown on 10-frames and the 100-square; column + and - can be modelled step-by-step. The images can also be adapted to create meaningful questions. This makes I See Maths + - an invaluable teaching tool.
![I See + - I See + -](https://www.iseemaths.com/wp-content/uploads/2016/05/I-See-.jpg)
![Singapore Bar Singapore Bar](https://www.iseemaths.com/wp-content/uploads/2016/05/Singapore-Bar.jpg)
The 'part-part-whole' structure, showing the relationship between addition and subtraction, is modelled by the Singapore Bar. Once the calculation has been entered, different numbers can be hidden to create effective questions.
![Ten Frame Ten Frame](https://www.iseemaths.com/wp-content/uploads/2016/05/Ten-Frame.jpg)
Calculations within 30 can be modelled on 10-frames. This helps children to develop a 'feel' for the size of number and see how additions are broken down over the tens boundary.
![100-square 100-square](https://www.iseemaths.com/wp-content/uploads/2016/05/100-square.jpg)
Calculations can be modelled on the 100-square, helping children to visualise number patterns when adding or subtracting 10 and 1. Challenge can be added by hiding any of the numbers on the 100-square.
![Dot Pattern Dot Pattern](https://www.iseemaths.com/wp-content/uploads/2016/05/Dot-Pattern.jpg)
Dot pattern games, creating using one or two colours of dots, can be used to develop immediate recognition of small quantities. Equally, children learn to progress from a 'counting in ones' strategy when quickly recognising larger quantities.
![Vertical Vertical](https://www.iseemaths.com/wp-content/uploads/2016/05/Vertical.jpg)
Column method additions and subtractions are modelled step-by-step using one, ten and hundred blocks. This helps children to develop a conceptual understanding of the processes being taught.