I love the Shichida method (lol)! I bought this new from the official website a few days ago! I thought it was amazing and bought it, but when I played it, it was a DVD o(TωT) I only have a CD player, so I'm reluctantly putting this up for sale... I haven't read the booklet. Therefore, the status is "new". The disc is also like new. However, since I did touch it once, please purchase only if you understand. I paid for shipping when I bought it, so I can't lower the price (-ω-；) It's a loss for me, so please understand. ● For children aged 3 to 6th grade ● Want to have fun with math ● Don't want them to feel like they're bad at math after starting school ● Want them to learn math formulas in a fun way with songs and videos ■ 【Skills you'll gain】 ● Understanding of shapes and their names ➤ Not only plane figures, but also solid figures are shown in animation from different perspectives, such as looking from above and from the side, making it easier to visualize. ● Knowledge of unit names and unit conversion ➤ Introduces what situations the units are used in. Also, the "Unit Conversion Song" uses animation to compare units, making it easier to visualize. ● Mastery of area formulas for shapes learned in elementary school ➤ Animation shows which parts refer to sides, heights, radii, etc., making it easier to understand when actually using the formulas. ● Visual understanding of fractions and decimal conversion ➤ Concepts that are difficult to imagine just by hearing the words, such as 5/8, become easier to understand when viewed with animation. ● Square numbers and multiplication by 3.14 for quick calculations ➤ Square numbers and multiplication by 3.14, which are often used in area calculations, are input with fun wordplay songs and illustrations. The unique illustrations that match the lyrics are impactful and easy to remember as images. ■ Contents List 1. Various Shapes 2. Unit Song 3. Unit Conversion Song 4. Fraction and Decimal Song 5. Area and Volume Formulas 6. 3.14 Song 7. Square Number Song 【How to use】 ● Watch the video, look at the text, and learn by singing. ■ Product Specifications ● Target age: 3 years old to 6th grade ● Size: B5 size ● Items: Text/16 pages, DVD/1 disc ● Recording time: 7 songs/with karaoke/approx. 25 minutes