Simon Brown calls it the C4 model not 4C

_learning_hours/architecture/simon_brown_4c_container.md

@@ -1,13 +1,13 @@
 ---
 theme: architecture
-title: Simon Brown's 4C model - Container diagram
+title: Simon Brown's C4 model - Container diagram
 kata: instavoiced
 difficulty: 2
 author: emilybache
 affiliation: ProAgile
 ---
 
-# Simon Brown's 4C model - Container diagrams
+# Simon Brown's C4 model - Container diagrams
 
 This learning hour follows on from the previous one on this topic and goes into a little more detail about [The C4 model for visualising software architecture](https://c4model.com/)
 
@@ -18,13 +18,13 @@ This learning hour follows on from the previous one on this topic and goes into
 
 ## Session Outline
 
-* 10 min connect: 4C recap 
+* 10 min connect: C4 recap 
 * 10 min concept: Context and Container diagrams
 * 20 min concrete: draw a container diagram 
 * 15 min conclusions: compare Context and Container diagrams
 
-### Connect: 4C recap
-The list below comprises descriptions of elements of the 4C model. Some statements describe a Diagram, some describe an Abstraction. Fill in the blanks with the following words:
+### Connect: C4 recap
+The list below comprises descriptions of elements of the C4 model. Some statements describe a Diagram, some describe an Abstraction. Fill in the blanks with the following words:
 
 - Component
 - System Context

_learning_hours/architecture/simon_brown_4c_context.md

@@ -1,27 +1,27 @@
 ---
 theme: architecture
-title: Simon Brown's 4C model - Intro
+title: Simon Brown's C4 model - Intro
 kata: instavoiced
 difficulty: 1
 author: emilybache
 affiliation: ProAgile
 ---
 
-# Simon Brown's 4C model - Intro
+# Simon Brown's C4 model - Intro
 
 This learning hour introduces the basic ideas in [The C4 model for visualising software architecture](https://c4model.com/)
 
 ## Learning Goals
-- list the names of the four models in the 4C model
-- describe the problem which the 4C model solves 
+- list the names of the four models in the C4 model
+- describe the problem which the C4 model solves 
 - sketch a Context diagram
 - distinguish between important elements to show in a Context diagram and details to exclude
 
 ## Session Outline
 
 * 5 min connect: What architecture diagrams do you already know?
 * 20 min concrete: analyse and draw diagrams for Instavoiced
-* 10 min concept: 4C model  
+* 10 min concept: C4 model  
 * 10 min concrete: draw Context diagram
 * 10 min conclusions: compare original diagrams with Context diagram
 
@@ -40,7 +40,7 @@ Working in pairs, read the description of the [Instavoiced](/kata_descriptions/i
 
 Use paper or a whiteboard.
 
-### Concept: 4C model
+### Concept: C4 model
 The front page of the [The C4 model for visualising software architecture](https://c4model.com/) website explains these concepts. Present them in your own way.
 
 - why we need architectural diagrams