Introduction to Chemistry: course for 6-7 graders

• Second ISCAR Congress, San Diego, 2008 [abstract, report, presentation]  
• EARLI SIG 10 and SIG 21 meeting, Utrecht, 2010 [abstract, poster]
• EAPRIL Annual Conference, Biel, 2013 [abstract, presentation]
• 12th ECRICE, Jyvaskyla, Finland, 2014: 1) oral presentation [abstract, presentation (commented), LUMAT article]
• 12th ECRICE, Jyvaskyla, Finland, 2014: 2) poster [abstract, poster]
• 6th Eurovariety in Chemistry Education Conference, Tartu, Estonia, 2015 [abstract, poster]
• EARLI SIG 10, 21 and 25 joint conference, Tartu, Estonia, 2016 [abstract, presentation]
• 13th ECRICE, Barcelona, Spain, 2016 [abstract, presentation]
• 7th Eurovariety, Belgrade, 2017 [abstract, poster, handout]
• 14th ECRICE, Warsaw, Poland, 2018 [abstact, poster]
• 16th PBE, Prague, Czech Republic, 2018 [presentation, Conference Proceedings, vol.2, p.51-58]
• 16th ECP, Moscow, Russia, 2019 [presentation]

Ratio concepts: Buoyancy and Density - a unit for 6-7 graders     

• EARLI SIG10 and SIG21 meeting, Utrecht, 2010 [proposal, report, presentation]

Ratio concepts: Paint mixing - a unit for 3-5 graders (concentration)

• Third ISCAR Conference, Rome, 2011 [abstract, extended summary, presentation]

Proportions, fractions, number sense for 5-6 graders

• EAPRIL Annual Conference, 2014 [presentation, article #4 in the EAPRIL 2014 Conference Proceedings, p.42-53]
• EAPRIL Annual Conference, 2015 [presentation, article in the EAPRIL 2015 Proceedings, p.439-450]
• EARLI SIG 10, 21 and 25 joint conference, Tartu, Estonia, 2016 [presentation]