diff --git a/module2/exo1/cars.png b/module2/exo1/cars.png
index b555e2dc3fe05b699092df6bc1405af1cde70fa6..a1d92052d1634ae839142b4355b675aa3fcaeeb4 100644
Binary files a/module2/exo1/cars.png and b/module2/exo1/cars.png differ
diff --git a/module2/exo1/cosxsx.png b/module2/exo1/cosxsx.png
index 90c19d9683fc5673b35b3481174a8afb47b04e6f..c291551bcba6f849193dce38c98a902802c1ffbe 100644
Binary files a/module2/exo1/cosxsx.png and b/module2/exo1/cosxsx.png differ
diff --git a/module2/exo1/toy_document_orgmode_R_en.org b/module2/exo1/toy_document_orgmode_R_en.org
index e10cbd30182e592a81807685e407a94b51c1af3f..f48656f1b4203ba6a91fd54fdb305ec0c6fe0492 100644
--- a/module2/exo1/toy_document_orgmode_R_en.org
+++ b/module2/exo1/toy_document_orgmode_R_en.org
@@ -41,21 +41,47 @@ persistent from one code block to the next. The code is still executed
 using ~C-c C-c~.
 
 #+begin_src R :results output :session *R* :exports both
-summary(cars)
+summary(mtcars)
 #+end_src
 
 #+RESULTS:
-:      speed           dist       
-:  Min.   : 4.0   Min.   :  2.00  
-:  1st Qu.:12.0   1st Qu.: 26.00  
-:  Median :15.0   Median : 36.00  
-:  Mean   :15.4   Mean   : 42.98  
-:  3rd Qu.:19.0   3rd Qu.: 56.00  
-:  Max.   :25.0   Max.   :120.00
+#+begin_example
+      mpg             cyl             disp             hp       
+ Min.   :10.40   Min.   :4.000   Min.   : 71.1   Min.   : 52.0  
+ 1st Qu.:15.43   1st Qu.:4.000   1st Qu.:120.8   1st Qu.: 96.5  
+ Median :19.20   Median :6.000   Median :196.3   Median :123.0  
+ Mean   :20.09   Mean   :6.188   Mean   :230.7   Mean   :146.7  
+ 3rd Qu.:22.80   3rd Qu.:8.000   3rd Qu.:326.0   3rd Qu.:180.0  
+ Max.   :33.90   Max.   :8.000   Max.   :472.0   Max.   :335.0  
+      drat             wt             qsec             vs        
+ Min.   :2.760   Min.   :1.513   Min.   :14.50   Min.   :0.0000  
+ 1st Qu.:3.080   1st Qu.:2.581   1st Qu.:16.89   1st Qu.:0.0000  
+ Median :3.695   Median :3.325   Median :17.71   Median :0.0000  
+ Mean   :3.597   Mean   :3.217   Mean   :17.85   Mean   :0.4375  
+ 3rd Qu.:3.920   3rd Qu.:3.610   3rd Qu.:18.90   3rd Qu.:1.0000  
+ Max.   :4.930   Max.   :5.424   Max.   :22.90   Max.   :1.0000  
+       am              gear            carb      
+ Min.   :0.0000   Min.   :3.000   Min.   :1.000  
+ 1st Qu.:0.0000   1st Qu.:3.000   1st Qu.:2.000  
+ Median :0.0000   Median :4.000   Median :2.000  
+ Mean   :0.4062   Mean   :3.688   Mean   :2.812  
+ 3rd Qu.:1.0000   3rd Qu.:4.000   3rd Qu.:4.000  
+ Max.   :1.0000   Max.   :5.000   Max.   :8.000
+#+end_example
 
 Finally, an example for graphical output:
 #+begin_src R :results output graphics :file "./cars.png" :exports results :width 600 :height 400 :session *R* 
-plot(cars)
+library(ggplot2)
+
+ggplot() + 
+    geom_point(data=mtcars, mapping=aes(x=wt, y=mpg, color=factor(gear))) +
+    scale_x_continuous("Weight") +
+    scale_y_continuous("Milage") + 
+    scale_color_discrete("Gear") + 
+    theme_bw()
+
+ggsave('./cars.png', width=5, height=2.5, units="in", dpi=120)
+
 #+end_src
 
 #+RESULTS:
diff --git a/module2/exo1/toy_document_orgmode_python_en.org b/module2/exo1/toy_document_orgmode_python_en.org
index 5782f493934678ba782fb65634a4d86e5f3adefc..b23a4b867d3472c8299eb5445cf36aae3d9e5b3b 100644
--- a/module2/exo1/toy_document_orgmode_python_en.org
+++ b/module2/exo1/toy_document_orgmode_python_en.org
@@ -63,11 +63,11 @@ Finally, an example for graphical output:
 #+begin_src python :results output file :session :var matplot_lib_filename="./cosxsx.png" :exports results
 import matplotlib.pyplot as plt
 
-plt.figure(figsize=(10,5))
+plt.figure(figsize=(6,3))
 plt.plot(x,numpy.cos(x)/x)
 plt.tight_layout()
 
-plt.savefig(matplot_lib_filename)
+plt.savefig(matplot_lib_filename, bbox_inches='tight')
 print(matplot_lib_filename)
 #+end_src
 
diff --git a/module2/exo2/exercice_en.Rmd b/module2/exo2/exercice_en.Rmd
index 13b258ddd0da29bc3bf08c64b6a1db742f6d5409..7796e79e75af09ef640385db144555bb81e7992f 100644
--- a/module2/exo2/exercice_en.Rmd
+++ b/module2/exo2/exercice_en.Rmd
@@ -23,7 +23,14 @@ summary(cars)
 It is also straightforward to include figures. For example:
 
 ```{r pressure, echo=FALSE}
-plot(pressure)
+library(ggplot2)
+
+ggplot() + 
+    geom_point(data=mtcars, mapping=aes(x=wt, y=mpg, color=factor(gear))) +
+    scale_x_continuous("Weight") +
+    scale_y_continuous("Milage") + 
+    scale_color_discrete("Gear") + 
+    theme_bw()
 ```
 
 Note the parameter `echo = FALSE` that indicates that the code will not appear in the final version of the document. We recommend not to use this parameter in the context of this MOOC, because we want your data analyses to be perfectly transparent and reproducible.