diff --git a/lectures/lecture-05/Agreement.gf b/lectures/lecture-05/Agreement.gf
new file mode 100644
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+++ b/lectures/lecture-05/Agreement.gf
@@ -0,0 +1,13 @@
+abstract Agreement = {
+    cat
+        S ;
+        CN ;
+        V ;
+        N ;
+        A ;
+        Det ;
+    fun
+        PredVPS : CN -> V -> S ;    -- the black cats run
+        DetCN : Det -> CN ;         -- the black cat
+        AdjCN : N -> A -> CN ;      -- black cats
+}
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diff --git a/lectures/lecture-05/MorphologyEng.gf b/lectures/lecture-05/MorphologyEng.gf
new file mode 100644
index 0000000..7f9f7d8
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+++ b/lectures/lecture-05/MorphologyEng.gf
@@ -0,0 +1,34 @@
+resource MorphologyEng = {
+
+param
+  Number = Sg | Pl ;
+
+oper
+  Noun : Type = {s : Number => Str} ;
+
+  mkNoun : Str -> Str -> Noun = \sg, pl -> 
+    {s = table {Sg => sg ; Pl => pl}} ;
+    
+  regNoun : Str -> Noun = \sg -> mkNoun sg (sg + "s") ;
+
+  smartNoun : Str -> Noun = \sg -> case sg of {
+    _ + ("s" | "ch" | "sh") => mkNoun sg (sg + "es") ;
+    _ + ("ay" | "ey" | "oy" | "uy") => regNoun sg ;
+    x + "y" => mkNoun sg (x + "ies") ;
+    _ => regNoun sg
+    } ;
+
+-- to test
+  teacher_N : Noun = {s = table {Sg => "teacher" ; Pl => "teachers"}} ;
+  
+  cat_N : Noun = mkNoun "cat" "cats" ;
+
+  dog_N : Noun = regNoun "dog" ;
+
+  bus_N : Noun = smartNoun "bus" ;
+  baby_N : Noun = smartNoun "baby" ;
+  fly_N : Noun = smartNoun "fly" ;
+  
+
+}
+
diff --git a/lectures/lecture-05/MorphologySwe.gf b/lectures/lecture-05/MorphologySwe.gf
new file mode 100644
index 0000000..da81cca
--- /dev/null
+++ b/lectures/lecture-05/MorphologySwe.gf
@@ -0,0 +1,61 @@
+resource MorphologySwe = {
+
+param
+  Case = Nom | Gen ;
+  Definite = Ind | Def ;
+  Gender = Com | Neut ;
+  Number = Sg | Pl ;
+
+  NForm = NF Number Definite Case ; -- NF is a constructor
+
+oper
+--  Noun = {s : Number => Definite => Case => Str ; g : Gender} ;
+  Noun = {s : NForm => Str ; g : Gender} ;
+
+  mkNoun : (sin, sig, sdn, sdg, pin, pig, pdn, pdg : Str) -> Gender -> Noun =
+    \sin, sig, sdn, sdg, pin, pig, pdn, pdg, g -> {
+      s = table {
+        NF Sg Ind Nom => sin ;
+        NF Sg Ind Gen => sig ;
+        NF Sg Def Nom => sdn ;
+        NF Sg Def Gen => sdg ;
+        NF Pl Ind Nom => pin ;
+        NF Pl Ind Gen => pig ;
+        NF Pl Def Nom => pdn ;
+        NF Pl Def Gen => pdg
+	} ;
+      g = g
+      } ;
+
+  addS : Str -> Str = \s -> case s of {
+    _ + ("s" | "x" | "z") => s ;
+    _ => s + "s"
+    } ;
+
+  mk4Noun : (sin, sdn, pin, pdn : Str) -> Noun =
+    \sin, sdn, pin, pdn -> {
+      s = table {
+        NF Sg Ind Nom => sin ;
+        NF Sg Ind Gen => addS sin ;
+        NF Sg Def Nom => sdn ;
+        NF Sg Def Gen => addS sdn ;
+        NF Pl Ind Nom => pin ;
+        NF Pl Ind Gen => addS pin ;
+        NF Pl Def Nom => pdn ;
+        NF Pl Def Gen => addS pdn
+	} ;
+      g = case sdn of {
+        _ + "n" => Com ;
+	_ => Neut
+	}
+      } ;
+
+  smartNoun : Str -> Noun = \mamma -> case mamma of {
+    mamm + "a" => mkNoun mamma (mamma + "s") (mamma + "n") (mamma + "ns")
+                (mamm + "or") (mamm + "ors") (mamm + "orna") (mamm + "ornas")
+		Com ;
+    bil => mkNoun bil (bil + "s") (bil + "en") (bil + "ens") 
+                (bil + "ar") (bil + "ars") (bil + "arna") (bil + "arnas") Com
+    } ;
+
+}
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diff --git a/lectures/lecture-05/examples.md b/lectures/lecture-05/examples.md
new file mode 100644
index 0000000..ac68f95
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+++ b/lectures/lecture-05/examples.md
@@ -0,0 +1,22 @@
+## Number agreement in NPs
+
+| Singular | Plural |
+| --- | --- |
+| black cat | black cats |
+| musta kissa | __mustat__ kissat |
+| gatto nero | gatti __neri__ |
+| schwarze Katze | schwarze Katzen |
+| chat noir | chats __noirs__ |
+| μαύρη γάτα | __μαύρες__ γάτες |
+| czarny kot | __czarne__ koty |
+| gato negro | gatos __negros__ |
+| pisică neagră | pisici __negre__ |
+| svart katt | __svarta__ katter |
+| zwarte kat | zwarte katten |
+| gato preto | gatos __pretos__ |
+| черная кошка | __черные__ кошки |
+
+## Number agreement in VPs
+
+- the black cat __runs__, the black cats __run__
+- den svarta katten springer, de svarta katter springer
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