diff --git a/example/audio/main.go b/example/audio/main.go
index ed35bfc..e5e3ec4 100644
--- a/example/audio/main.go
+++ b/example/audio/main.go
@@ -42,10 +42,10 @@ import (
 	"golang.org/x/mobile/event"
 	"golang.org/x/mobile/exp/app/debug"
 	"golang.org/x/mobile/exp/audio"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/exp/sprite"
 	"golang.org/x/mobile/exp/sprite/clock"
 	"golang.org/x/mobile/exp/sprite/glsprite"
-	"golang.org/x/mobile/f32"
 	"golang.org/x/mobile/gl"
 )
 
diff --git a/example/basic/main.go b/example/basic/main.go
index ca4cfb2..ca52e86 100644
--- a/example/basic/main.go
+++ b/example/basic/main.go
@@ -33,8 +33,8 @@ import (
 	"golang.org/x/mobile/app"
 	"golang.org/x/mobile/event"
 	"golang.org/x/mobile/exp/app/debug"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/exp/gl/glutil"
-	"golang.org/x/mobile/f32"
 	"golang.org/x/mobile/geom"
 	"golang.org/x/mobile/gl"
 )
diff --git a/example/sprite/main.go b/example/sprite/main.go
index b5cd487..1ff14dc 100644
--- a/example/sprite/main.go
+++ b/example/sprite/main.go
@@ -38,10 +38,10 @@ import (
 	"golang.org/x/mobile/asset"
 	"golang.org/x/mobile/event"
 	"golang.org/x/mobile/exp/app/debug"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/exp/sprite"
 	"golang.org/x/mobile/exp/sprite/clock"
 	"golang.org/x/mobile/exp/sprite/glsprite"
-	"golang.org/x/mobile/f32"
 	"golang.org/x/mobile/gl"
 )
 
diff --git a/f32/affine.go b/exp/f32/affine.go
similarity index 100%
rename from f32/affine.go
rename to exp/f32/affine.go
diff --git a/f32/affine_test.go b/exp/f32/affine_test.go
similarity index 100%
rename from f32/affine_test.go
rename to exp/f32/affine_test.go
diff --git a/f32/f32.go b/exp/f32/f32.go
similarity index 97%
rename from f32/f32.go
rename to exp/f32/f32.go
index b794b9a..d794398 100644
--- a/f32/f32.go
+++ b/exp/f32/f32.go
@@ -23,7 +23,7 @@
 // The interface to this package is not stable. It will change considerably.
 // Only use functions that provide package documentation. Semantics are
 // non-obvious. Be prepared for the package name to change.
-package f32 // import "golang.org/x/mobile/f32"
+package f32 // import "golang.org/x/mobile/exp/f32"
 
 import (
 	"encoding/binary"
diff --git a/f32/f32_test.go b/exp/f32/f32_test.go
similarity index 100%
rename from f32/f32_test.go
rename to exp/f32/f32_test.go
diff --git a/f32/gen.go b/exp/f32/gen.go
similarity index 100%
rename from f32/gen.go
rename to exp/f32/gen.go
diff --git a/f32/mat3.go b/exp/f32/mat3.go
similarity index 100%
rename from f32/mat3.go
rename to exp/f32/mat3.go
diff --git a/f32/mat4.go b/exp/f32/mat4.go
similarity index 100%
rename from f32/mat4.go
rename to exp/f32/mat4.go
diff --git a/f32/table.go b/exp/f32/table.go
similarity index 100%
rename from f32/table.go
rename to exp/f32/table.go
diff --git a/f32/vec3.go b/exp/f32/vec3.go
similarity index 100%
rename from f32/vec3.go
rename to exp/f32/vec3.go
diff --git a/f32/vec4.go b/exp/f32/vec4.go
similarity index 100%
rename from f32/vec4.go
rename to exp/f32/vec4.go
diff --git a/exp/gl/glutil/glimage.go b/exp/gl/glutil/glimage.go
index d6d36bd..d7756e4 100644
--- a/exp/gl/glutil/glimage.go
+++ b/exp/gl/glutil/glimage.go
@@ -14,7 +14,7 @@ import (
 	"sync"
 
 	"golang.org/x/mobile/event"
-	"golang.org/x/mobile/f32"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/geom"
 	"golang.org/x/mobile/gl"
 )
diff --git a/exp/gl/glutil/glutil.go b/exp/gl/glutil/glutil.go
index f97a8a9..babb1c9 100644
--- a/exp/gl/glutil/glutil.go
+++ b/exp/gl/glutil/glutil.go
@@ -8,7 +8,7 @@ package glutil // import "golang.org/x/mobile/exp/gl/glutil"
 import (
 	"fmt"
 
-	"golang.org/x/mobile/f32"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/gl"
 )
 
diff --git a/exp/sprite/glsprite/glsprite.go b/exp/sprite/glsprite/glsprite.go
index 52b29be..b8f023b 100644
--- a/exp/sprite/glsprite/glsprite.go
+++ b/exp/sprite/glsprite/glsprite.go
@@ -13,10 +13,10 @@ import (
 	"image/draw"
 
 	"golang.org/x/mobile/event"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/exp/gl/glutil"
 	"golang.org/x/mobile/exp/sprite"
 	"golang.org/x/mobile/exp/sprite/clock"
-	"golang.org/x/mobile/f32"
 	"golang.org/x/mobile/geom"
 )
 
diff --git a/exp/sprite/portable/affine.go b/exp/sprite/portable/affine.go
index 28016d8..c6aa37a 100644
--- a/exp/sprite/portable/affine.go
+++ b/exp/sprite/portable/affine.go
@@ -8,7 +8,7 @@ import (
 	"image"
 	"image/draw"
 
-	"golang.org/x/mobile/f32"
+	"golang.org/x/mobile/exp/f32"
 )
 
 // affine draws each pixel of dst using bilinear interpolation of the
diff --git a/exp/sprite/portable/affine_test.go b/exp/sprite/portable/affine_test.go
index 2da21ad..490e19c 100644
--- a/exp/sprite/portable/affine_test.go
+++ b/exp/sprite/portable/affine_test.go
@@ -15,7 +15,7 @@ import (
 	"testing"
 
 	"golang.org/x/mobile/event"
-	"golang.org/x/mobile/f32"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/geom"
 )
 
diff --git a/exp/sprite/portable/portable.go b/exp/sprite/portable/portable.go
index 009cf42..02675dc 100644
--- a/exp/sprite/portable/portable.go
+++ b/exp/sprite/portable/portable.go
@@ -14,9 +14,9 @@ import (
 	"image/draw"
 
 	"golang.org/x/mobile/event"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/exp/sprite"
 	"golang.org/x/mobile/exp/sprite/clock"
-	"golang.org/x/mobile/f32"
 )
 
 // Engine builds a sprite Engine that renders onto dst.
diff --git a/exp/sprite/sprite.go b/exp/sprite/sprite.go
index 5b73f57..1c96e5b 100644
--- a/exp/sprite/sprite.go
+++ b/exp/sprite/sprite.go
@@ -29,8 +29,8 @@ import (
 	"image/draw"
 
 	"golang.org/x/mobile/event"
+	"golang.org/x/mobile/exp/f32"
 	"golang.org/x/mobile/exp/sprite/clock"
-	"golang.org/x/mobile/f32"
 )
 
 type Arranger interface {