Section Title  Primary information  Description and Notes  Suggested resources 

Lesson Length  The expected lesson length will be approximately one hour 
Some variation possible. Assessment Level 1 

Students  The lesson is suitable for KS3 and KS4 students  Since this is a new specification, the lesson is suitable for Year 7 to 9 students and differentiated by outcome  
Overall Focus  The lesson focus will consolidate what they have learned previously  This lesson will begin to explore how much they know and how well they can apply this when it comes to making their won algorithms 
Lesson Links: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 
Key words  algorithm, abstraction, programming language, instruction, open source, digital, file types, variable  These words need to be reinforced throughout the series of lessons  
Assessment  Identify different algorithms that target the same task  Evidence here will be student's reflecting on what they understand and assessor observations  
Key Questions  Some questions to get learners thinking about the topics  Looking at the way algorithms do what they are designed to do, but could it be better.  What examples can they think of where different instructions will lead to the same result? Can they think of why this might be useful? What makes students decide on a particular "algorithm" such as going to school. What factors do they consider, i.e avoid someone's house, good view, scary dog etc. 
Learning Objectives 

Students need to practice with a range of algorithms that do the same tasks but in different ways. 
If you are using the Learning Machine learning system, students can add their comments and material to this site as evidence of their growing understanding. The site, if used consistently, will show progression via charts of activity and outcomes. 
Teaching and Learning Elements 

Students need to be taught some of the fundamentals of algorithms and how they can be constructed, but also some of the variation in them. This will lead in to more quality programming from the students later on as they realise the best way to write routines (algorithms) for tasks. 

Lesson Structure  Possible structure 

Work through the Search Algorithm on CS Unplugged and discuss what is happening and why. How can two algorithms get the same result with different methods. Emphasize that solving the problem is key and there are always many ways to do this, so many algorithms possible. This algorithm shows how diagnosis of a childhood illness is worked out. The image shown here shows an algorithm for deciding to play or not. This well known site uses a lot of algorithms. Their latest algorithm, Penguin 3.0 is explained here . The password generator we looked at in an earlier lesson also uses an algorithm to find the best password for users based on factors such as mixing capitals and small letters, numbers, symbols etc. You can even make algorithms to herd sheep. On the algorithm link in the key words box above, there is an example of various algorithms applied to sorting cards. Students can sort them by numbers, colours, suits, style (number or picture cards) etc. Show how common place algorithms are and how easy it is to get the same result with two different methods. 
Homework  Get students to write a short evaluation of their view of algorithms. They can use one that they made up and say why it is good  Students can vary their homework depending on their level of understanding  Get students to document their recipes on their portfolio system for assessment 