diff --git a/slides/k8s/architecture.md b/slides/k8s/architecture.md
index 701a3415..ecd28284 100644
--- a/slides/k8s/architecture.md
+++ b/slides/k8s/architecture.md
@@ -46,7 +46,7 @@ class: pic
 
 - Our containerized workloads
 
-- A container engine like Docker, CRI-O, container...
+- A container engine like Docker, CRI-O, containerd...
 
   (in theory, the choice doesn't matter, as the engine is abstracted by Kubernetes)
 
@@ -72,7 +72,7 @@ class: pic
 
   - the nodes register and get their instructions through the API server
 
-  - the other control plane components also register to the API server
+  - the other control plane components also register with the API server
 
 - API server is the only component that reads/writes from/to etcd
 
diff --git a/slides/k8s/cluster-upgrade.md b/slides/k8s/cluster-upgrade.md
index 4fa08593..a599f58d 100644
--- a/slides/k8s/cluster-upgrade.md
+++ b/slides/k8s/cluster-upgrade.md
@@ -77,7 +77,7 @@
 
 ## What version are we running anyway?
 
-- When I say, "I'm Kubernetes 1.11", is that the version of:
+- When I say, "I'm running Kubernetes 1.11", is that the version of:
 
   - kubectl